1 | #
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2 | # For a description of the syntax of this configuration file,
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3 | # see scripts/kbuild/config-language.txt.
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4 | #
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5 |
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6 | menu "Linux System Utilities"
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7 |
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8 | config DMESG
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9 | bool "dmesg"
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10 | default n
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11 | help
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12 | dmesg is used to examine or control the kernel ring buffer. When the
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13 | Linux kernel prints messages to the system log, they are stored in
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14 | the kernel ring buffer. You can use dmesg to print the kernel's ring
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15 | buffer, clear the kernel ring buffer, change the size of the kernel
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16 | ring buffer, and change the priority level at which kernel messages
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17 | are also logged to the system console. Enable this option if you
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18 | wish to enable the 'dmesg' utility.
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19 |
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20 | config FEATURE_DMESG_PRETTY
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21 | bool "pretty dmesg output"
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22 | default y
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23 | depends on DMESG
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24 | help
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25 | If you wish to scrub the syslog level from the output, say 'Y' here.
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26 | The syslog level is a string prefixed to every line with the form "<#>".
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27 |
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28 | With this option you will see:
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29 | # dmesg
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30 | Linux version 2.6.17.4 .....
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31 | BIOS-provided physical RAM map:
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32 | BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
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33 |
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34 | Without this option you will see:
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35 | # dmesg
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36 | <5>Linux version 2.6.17.4 .....
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37 | <6>BIOS-provided physical RAM map:
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38 | <6> BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
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39 |
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40 | config FBSET
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41 | bool "fbset"
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42 | default n
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43 | help
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44 | fbset is used to show or change the settings of a Linux frame buffer
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45 | device. The frame buffer device provides a simple and unique
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46 | interface to access a graphics display. Enable this option
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47 | if you wish to enable the 'fbset' utility.
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48 |
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49 | config FEATURE_FBSET_FANCY
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50 | bool "Turn on extra fbset options"
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51 | default n
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52 | depends on FBSET
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53 | help
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54 | This option enables extended fbset options, allowing one to set the
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55 | framebuffer size, color depth, etc. interface to access a graphics
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56 | display. Enable this option if you wish to enable extended fbset
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57 | options.
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58 |
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59 | config FEATURE_FBSET_READMODE
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60 | bool "Turn on fbset readmode support"
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61 | default n
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62 | depends on FBSET
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63 | help
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64 | This option allows fbset to read the video mode database stored by
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65 | default as /etc/fb.modes, which can be used to set frame buffer
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66 | device to pre-defined video modes.
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67 |
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68 | config FDFLUSH
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69 | bool "fdflush"
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70 | default n
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71 | help
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72 | fdflush is only needed when changing media on slightly-broken
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73 | removable media drives. It is used to make Linux believe that a
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74 | hardware disk-change switch has been actuated, which causes Linux to
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75 | forget anything it has cached from the previous media. If you have
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76 | such a slightly-broken drive, you will need to run fdflush every time
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77 | you change a disk. Most people have working hardware and can safely
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78 | leave this disabled.
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79 |
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80 | config FDFORMAT
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81 | bool "fdformat"
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82 | default n
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83 | help
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84 | fdformat is used to low-level format a floppy disk.
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85 |
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86 | config FDISK
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87 | bool "fdisk"
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88 | default n
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89 | help
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90 | The fdisk utility is used to divide hard disks into one or more
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91 | logical disks, which are generally called partitions. This utility
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92 | can be used to list and edit the set of partitions or BSD style
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93 | 'disk slices' that are defined on a hard drive.
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94 |
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95 | config FDISK_SUPPORT_LARGE_DISKS
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96 | bool "support over 4GB disks"
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97 | default y
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98 | depends on FDISK
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99 | help
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100 | Enable this option to support large disks > 4GB.
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101 |
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102 | config FEATURE_FDISK_WRITABLE
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103 | bool "Write support"
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104 | default y
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105 | depends on FDISK
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106 | help
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107 | Enabling this option allows you to create or change a partition table
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108 | and write those changes out to disk. If you leave this option
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109 | disabled, you will only be able to view the partition table.
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110 |
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111 | config FEATURE_AIX_LABEL
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112 | bool "Support AIX disklabels"
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113 | default n
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114 | depends on FDISK && FEATURE_FDISK_WRITABLE
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115 | help
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116 | Enabling this option allows you to create or change AIX disklabels.
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117 | Most people can safely leave this option disabled.
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118 |
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119 | config FEATURE_SGI_LABEL
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120 | bool "Support SGI disklabels"
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121 | default n
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122 | depends on FDISK && FEATURE_FDISK_WRITABLE
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123 | help
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124 | Enabling this option allows you to create or change SGI disklabels.
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125 | Most people can safely leave this option disabled.
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126 |
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127 | config FEATURE_SUN_LABEL
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128 | bool "Support SUN disklabels"
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129 | default n
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130 | depends on FDISK && FEATURE_FDISK_WRITABLE
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131 | help
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132 | Enabling this option allows you to create or change SUN disklabels.
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133 | Most people can safely leave this option disabled.
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134 |
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135 | config FEATURE_OSF_LABEL
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136 | bool "Support BSD disklabels"
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137 | default n
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138 | depends on FDISK && FEATURE_FDISK_WRITABLE
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139 | help
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140 | Enabling this option allows you to create or change BSD disklabels
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141 | and define and edit BSD disk slices.
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142 |
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143 | config FEATURE_FDISK_ADVANCED
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144 | bool "Support expert mode"
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145 | default n
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146 | depends on FDISK && FEATURE_FDISK_WRITABLE
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147 | help
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148 | Enabling this option allows you to do terribly unsafe things like
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149 | define arbitrary drive geometry, move the beginning of data in a
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150 | partition, and similarly evil things. Unless you have a very good
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151 | reason you would be wise to leave this disabled.
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152 |
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153 | config FREERAMDISK
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154 | bool "freeramdisk"
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155 | default n
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156 | help
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157 | Linux allows you to create ramdisks. This utility allows you to
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158 | delete them and completely free all memory that was used for the
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159 | ramdisk. For example, if you boot Linux into a ramdisk and later
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160 | pivot_root, you may want to free the memory that is allocated to the
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161 | ramdisk. If you have no use for freeing memory from a ramdisk, leave
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162 | this disabled.
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163 |
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164 | config FSCK_MINIX
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165 | bool "fsck_minix"
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166 | default n
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167 | help
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168 | The minix filesystem is a nice, small, compact, read-write filesystem
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169 | with little overhead. It is not a journaling filesystem however and
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170 | can experience corruption if it is not properly unmounted or if the
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171 | power goes off in the middle of a write. This utility allows you to
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172 | check for and attempt to repair any corruption that occurs to a minix
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173 | filesystem.
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174 |
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175 | config MKFS_MINIX
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176 | bool "mkfs_minix"
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177 | default n
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178 | help
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179 | The minix filesystem is a nice, small, compact, read-write filesystem
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180 | with little overhead. If you wish to be able to create minix filesystems
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181 | this utility will do the job for you.
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182 |
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183 | comment "Minix filesystem support"
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184 | depends on FSCK_MINIX || MKFS_MINIX
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185 |
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186 | config FEATURE_MINIX2
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187 | bool "Support Minix fs v2 (fsck_minix/mkfs_minix)"
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188 | default y
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189 | depends on FSCK_MINIX || MKFS_MINIX
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190 | help
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191 | If you wish to be able to create version 2 minix filesystems, enable this.
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192 | If you enabled 'mkfs_minix' then you almost certainly want to be using the
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193 | version 2 filesystem support.
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194 |
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195 | config GETOPT
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196 | bool "getopt"
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197 | default n
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198 | help
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199 | The getopt utility is used to break up (parse) options in command
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200 | lines to make it easy to write complex shell scripts that also check
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201 | for legal (and illegal) options. If you want to write horribly
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202 | complex shell scripts, or use some horribly complex shell script
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203 | written by others, this utility may be for you. Most people will
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204 | wisely leave this disabled.
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205 |
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206 | config HEXDUMP
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207 | bool "hexdump"
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208 | default n
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209 | help
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210 | The hexdump utility is used to display binary data in a readable
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211 | way that is comparable to the output from most hex editors.
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212 |
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213 | config HWCLOCK
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214 | bool "hwclock"
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215 | default n
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216 | help
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217 | The hwclock utility is used to read and set the hardware clock
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218 | on a system. This is primarily used to set the current time on
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219 | shutdown in the hardware clock, so the hardware will keep the
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220 | correct time when Linux is _not_ running.
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221 |
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222 | config FEATURE_HWCLOCK_LONG_OPTIONS
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223 | bool "Support long options (--hctosys,...)"
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224 | default n
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225 | depends on HWCLOCK && GETOPT_LONG
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226 | help
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227 | By default, the hwclock utility only uses short options. If you
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228 | are overly fond of its long options, such as --hctosys, --utc, etc)
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229 | then enable this option.
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230 |
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231 | config FEATURE_HWCLOCK_ADJTIME_FHS
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232 | bool "Use FHS /var/lib/hwclock/adjtime"
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233 | default y
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234 | depends on HWCLOCK
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235 | help
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236 | Starting with FHS 2.3, the adjtime state file is supposed to exist
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237 | at /var/lib/hwclock/adjtime instead of /etc/adjtime. If you wish
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238 | to use the FHS behavior, answer Y here, otherwise answer N for the
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239 | classic /etc/adjtime path.
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240 |
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241 | http://www.pathname.com/fhs/pub/fhs-2.3.html#VARLIBHWCLOCKSTATEDIRECTORYFORHWCLO
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242 |
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243 | config IPCRM
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244 | bool "ipcrm"
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245 | default n
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246 | select FEATURE_SUID
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247 | help
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248 | The ipcrm utility allows the removal of System V interprocess
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249 | communication (IPC) objects and the associated data structures
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250 | from the system.
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251 |
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252 | config IPCS
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253 | bool "ipcs"
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254 | default n
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255 | select FEATURE_SUID
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256 | help
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257 | The ipcs utility is used to provide information on the currently
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258 | allocated System V interprocess (IPC) objects in the system.
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259 |
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260 | config LOSETUP
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261 | bool "losetup"
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262 | default n
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263 | help
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264 | losetup is used to associate or detach a loop device with a regular
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265 | file or block device, and to query the status of a loop device. This
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266 | version does not currently support enabling data encryption.
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267 |
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268 | config MDEV
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269 | bool "mdev"
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270 | default n
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271 | help
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272 | mdev is a mini-udev implementation for dynamically creating device
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273 | nodes in the /dev directory.
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274 |
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275 | For more information, please see docs/mdev.txt
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276 |
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277 | config FEATURE_MDEV_CONF
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278 | bool "Support /etc/mdev.conf"
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279 | default n
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280 | depends on MDEV
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281 | help
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282 | Add support for the mdev config file to control ownership and
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283 | permissions of the device nodes.
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284 |
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285 | For more information, please see docs/mdev.txt
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286 |
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287 | config FEATURE_MDEV_EXEC
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288 | bool "Support command execution at device addition/removal"
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289 | default n
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290 | depends on FEATURE_MDEV_CONF
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291 | help
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292 | This adds support for an optional field to /etc/mdev.conf for
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293 | executing commands when devices are created/removed.
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294 |
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295 | For more information, please see docs/mdev.txt
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296 |
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297 | config FEATURE_MDEV_LOAD_FIRMWARE
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298 | bool "Support loading of firmwares"
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299 | default n
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300 | depends on MDEV
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301 | help
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302 | Some devices need to load firmware before they can be usable.
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303 |
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304 | These devices will request userspace look up the files in
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305 | /lib/firmware/ and if it exists, send it to the kernel for
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306 | loading into the hardware.
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307 |
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308 | config MKSWAP
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309 | bool "mkswap"
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310 | default n
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311 | help
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312 | The mkswap utility is used to configure a file or disk partition as
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313 | Linux swap space. This allows Linux to use the entire file or
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314 | partition as if it were additional RAM, which can greatly increase
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315 | the capability of low-memory machines. This additional memory is
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316 | much slower than real RAM, but can be very helpful at preventing your
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317 | applications being killed by the Linux out of memory (OOM) killer.
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318 | Once you have created swap space using 'mkswap' you need to enable
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319 | the swap space using the 'swapon' utility.
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320 |
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321 | config FEATURE_MKSWAP_V0
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322 | bool "version 0 support"
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323 | default n
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324 | depends on MKSWAP
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325 | # depends on MKSWAP && DEPRECATED
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326 | help
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327 | Enable support for the old v0 style.
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328 | If your kernel is older than 2.1.117, then v0 support is the
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329 | only option.
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330 |
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331 | config MORE
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332 | bool "more"
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333 | default n
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334 | help
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335 | more is a simple utility which allows you to read text one screen
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336 | sized page at a time. If you want to read text that is larger than
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337 | the screen, and you are using anything faster than a 300 baud modem,
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338 | you will probably find this utility very helpful. If you don't have
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339 | any need to reading text files, you can leave this disabled.
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340 |
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341 | config FEATURE_USE_TERMIOS
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342 | bool "Use termios to manipulate the screen"
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343 | default y
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344 | depends on MORE
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345 | help
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346 | This option allows utilities such as 'more' and 'top' to determine
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347 | the size of the screen. If you leave this disabled, your utilities
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348 | that display things on the screen will be especially primitive and
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349 | will be unable to determine the current screen size, and will be
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350 | unable to move the cursor.
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351 |
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352 | config MOUNT
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353 | bool "mount"
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354 | default n
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355 | help
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356 | All files and filesystems in Unix are arranged into one big directory
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357 | tree. The 'mount' utility is used to graft a filesystem onto a
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358 | particular part of the tree. A filesystem can either live on a block
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359 | device, or it can be accessible over the network, as is the case with
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360 | NFS filesystems. Most people using BusyBox will also want to enable
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361 | the 'mount' utility.
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362 |
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363 | config FEATURE_MOUNT_NFS
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364 | bool "Support mounting NFS file systems"
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365 | default n
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366 | depends on MOUNT
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367 | select FEATURE_HAVE_RPC
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368 | select FEATURE_SYSLOG
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369 | help
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370 | Enable mounting of NFS file systems.
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371 |
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372 | config FEATURE_MOUNT_CIFS
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373 | bool "Support mounting CIFS/SMB file systems"
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374 | default n
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375 | depends on MOUNT
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376 | help
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377 | Enable support for samba mounts.
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378 |
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379 | config FEATURE_MOUNT_FLAGS
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380 | depends on MOUNT
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381 | bool "Support lots of -o flags in mount"
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382 | default y
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383 | help
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384 | Without this, mount only supports ro/rw/remount. With this, it
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385 | supports nosuid, suid, dev, nodev, exec, noexec, sync, async, atime,
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386 | noatime, diratime, nodiratime, loud, bind, move, shared, slave,
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387 | private, unbindable, rshared, rslave, rprivate, and runbindable.
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388 |
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389 | config FEATURE_MOUNT_FSTAB
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390 | depends on MOUNT
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391 | bool "Support /etc/fstab and -a"
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392 | default y
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393 | help
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394 | Support mount all and looking for files in /etc/fstab.
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395 |
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396 | config PIVOT_ROOT
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397 | bool "pivot_root"
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398 | default n
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399 | help
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400 | The pivot_root utility swaps the mount points for the root filesystem
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401 | with some other mounted filesystem. This allows you to do all sorts
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402 | of wild and crazy things with your Linux system and is far more
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403 | powerful than 'chroot'.
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404 |
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405 | Note: This is for initrd in linux 2.4. Under initramfs (introduced
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406 | in linux 2.6) use switch_root instead.
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407 |
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408 | config RDATE
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409 | bool "rdate"
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410 | default n
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411 | help
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412 | The rdate utility allows you to synchronize the date and time of your
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413 | system clock with the date and time of a remote networked system using
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414 | the RFC868 protocol, which is built into the inetd daemon on most
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415 | systems.
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416 |
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417 | config READPROFILE
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418 | bool "readprofile"
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419 | default n
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420 | help
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421 | This allows you to parse /proc/profile for basic profiling.
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422 |
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423 | config SETARCH
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424 | bool "setarch"
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425 | default n
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426 | help
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427 | The linux32 utility is used to create a 32bit environment for the
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428 | specified program (usually a shell). It only makes sense to have
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429 | this util on a system that supports both 64bit and 32bit userland
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430 | (like amd64/x86, ppc64/ppc, sparc64/sparc, etc...).
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431 |
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432 | config SWAPONOFF
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433 | bool "swaponoff"
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434 | default n
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435 | help
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436 | This option enables both the 'swapon' and the 'swapoff' utilities.
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437 | Once you have created some swap space using 'mkswap', you also need
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438 | to enable your swap space with the 'swapon' utility. The 'swapoff'
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439 | utility is used, typically at system shutdown, to disable any swap
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440 | space. If you are not using any swap space, you can leave this
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441 | option disabled.
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442 |
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443 | config SWITCH_ROOT
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444 | bool "switch_root"
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445 | default n
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446 | help
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447 | The switch_root utility is used from initramfs to select a new
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448 | root device. Under initramfs, you have to use this instead of
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449 | pivot_root. (Stop reading here if you don't care why.)
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450 |
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451 | Booting with initramfs extracts a gzipped cpio archive into rootfs
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452 | (which is a variant of ramfs/tmpfs). Because rootfs can't be moved
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453 | or unmounted*, pivot_root will not work from initramfs. Instead,
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454 | switch_root deletes everything out of rootfs (including itself),
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455 | does a mount --move that overmounts rootfs with the new root, and
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456 | then execs the specified init program.
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457 |
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458 | * Because the Linux kernel uses rootfs internally as the starting
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459 | and ending point for searching through the kernel's doubly linked
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460 | list of active mount points. That's why.
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461 |
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462 | config UMOUNT
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463 | bool "umount"
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464 | default n
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465 | help
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466 | When you want to remove a mounted filesystem from its current mount point,
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467 | for example when you are shutting down the system, the 'umount' utility is
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468 | the tool to use. If you enabled the 'mount' utility, you almost certainly
|
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469 | also want to enable 'umount'.
|
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470 |
|
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471 | config FEATURE_UMOUNT_ALL
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472 | bool "umount -a option"
|
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473 | default n
|
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474 | depends on UMOUNT
|
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475 | help
|
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476 | Support -a option to unmount all currently mounted filesystems.
|
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477 |
|
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478 | comment "Common options for mount/umount"
|
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479 | depends on MOUNT || UMOUNT
|
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480 |
|
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481 | config FEATURE_MOUNT_LOOP
|
---|
482 | bool "Support loopback mounts"
|
---|
483 | default n
|
---|
484 | depends on MOUNT || UMOUNT
|
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485 | help
|
---|
486 | Enabling this feature allows automatic mounting of files (containing
|
---|
487 | filesystem images) via the linux kernel's loopback devices. The mount
|
---|
488 | command will detect you are trying to mount a file instead of a block
|
---|
489 | device, and transparently associate the file with a loopback device.
|
---|
490 | The umount command will also free that loopback device.
|
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491 |
|
---|
492 | You can still use the 'losetup' utility (to manually associate files
|
---|
493 | with loop devices) if you need to do something advanced, such as
|
---|
494 | specify an offset or cryptographic options to the loopback device.
|
---|
495 | (If you don't want umount to free the loop device, use "umount -D".)
|
---|
496 |
|
---|
497 | config FEATURE_MTAB_SUPPORT
|
---|
498 | bool "Support for the old /etc/mtab file"
|
---|
499 | default n
|
---|
500 | depends on MOUNT || UMOUNT
|
---|
501 | help
|
---|
502 | Historically, Unix systems kept track of the currently mounted
|
---|
503 | partitions in the file "/etc/mtab". These days, the kernel exports
|
---|
504 | the list of currently mounted partitions in "/proc/mounts", rendering
|
---|
505 | the old mtab file obsolete. (In modern systems, /etc/mtab should be
|
---|
506 | a symlink to /proc/mounts.)
|
---|
507 |
|
---|
508 | The only reason to have mount maintain an /etc/mtab file itself is if
|
---|
509 | your stripped-down embedded system does not have a /proc directory.
|
---|
510 | If you must use this, keep in mind it's inherently brittle (for
|
---|
511 | example a mount under chroot won't update it), can't handle modern
|
---|
512 | features like separate per-process filesystem namespaces, requires
|
---|
513 | that your /etc directory be writeable, tends to get easily confused
|
---|
514 | by --bind or --move mounts, won't update if you rename a directory
|
---|
515 | that contains a mount point, and so on. (In brief: avoid.)
|
---|
516 |
|
---|
517 | About the only reason to use this is if you've removed /proc from
|
---|
518 | your kernel.
|
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519 |
|
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520 | endmenu
|
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521 |
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