0 1 2 0 1 2 0 1 2 0 2 4 fx is a function fx () { i=0; for ((1; i < 3; i++ )) do echo $i; done; for ((i=0; 1; i++ )) do if (( i >= 3 )); then break; fi; echo $i; done; for ((i=0; i<3; 1)) do echo $i; (( i++ )); done; i=0; for ((1; 1; 1)) do if (( i > 2 )); then break; fi; echo $i; (( i++ )); done; i=0; for ((1; 1; 1)) do if (( i > 2 )); then break; fi; echo $i; (( i++ )); done } 0 1 2 0 1 2 0 1 2 0 1 2 0 1 2 ./arith-for.tests: line 77: syntax error: arithmetic expression required ./arith-for.tests: line 77: syntax error: `(( i=0; "i < 3" ))' 2 ./arith-for.tests: line 83: syntax error: `;' unexpected ./arith-for.tests: line 83: syntax error: `(( i=0; i < 3; i++; 7 ))' 2 20 20