bashrangeiteration

How to produce a range with step n in bash? (generate a sequence of numbers with increments)

The way to iterate over a range in bash is

for i in {0..10}; do echo $i; done

What would be the syntax for iterating over the sequence with a step? Say, I would like to get only even number in the above example.

Solution

  • I'd do

    for i in `seq 0 2 10`; do echo $i; done

    (though of course seq 0 2 10 will produce the same output on its own).

    Note that seq allows floating-point numbers (e.g., seq .5 .25 3.5) but bash's brace expansion only allows integers.