And on bash you can simply use {1..n}: $ echo {1..5} 1 2 3 4 5 If you have Bash 4.0 or above, you can include a step size: $ echo {1..10..2}

And on bash you can simply use {1..n}: $ echo {1..5} 1 2 3 4 5 If you have Bash 4.0 or above, you can include a step size: $ echo {1..10..2} 1 3 5 7 9