bash has a command called seq that takes a number and returns a sequence of numbers up to and including that number, starting from 1.

You can also define the intervals using two additional (optional) arguments: seq $BEGIN $INTERVAL $END. For example, seq 0 1 3 would return the list 0 1 2 3, whereas seq 0 2 10 would return 0 2 4 6 8 10.

I think a function that performs similar to seq would be a great enhancement to sprig, as one could use it in templates via the following:

It's as easy as {{ seq 3 }}!

Docs for seq can be found here: http://tldp.org/LDP/abs/html/extmisc.html

For the time being, you can use list 1 2 3 to achieve the same effect.

ref: helm/helm#4876