@chubot: There is one use-case I come across every once in a while: https://stackoverflow.com/questions/356100/how-to-wait-in-ba... So whenever you want to do things in parallel there is probably a limit to the number of processes you would like to execute in parallel (e.g. the famous compiler limit formula: number of CPU cores +1). It would be great if Oil could support such a use-case out of the box, as easy parall…
Absolutely. In fact, the bash manual explicitly refers to GNU parallel for this use case! I use xargs -P all over the Oil codebase, which does what you want. The trick is to end the file with "$@", and then invoke xargs -P 4 -- $0 my-func. That way xargs can run arbitrary shell functions, not just something like sh -c "..." ! I'm going to write a blog post about this. I also do this with find -exec $0 myfunc ';' http…
So I ended up using the loop syntax:
for i in {0..9}; do
echo "$i" &
done
wait
Just an idea from the top of my head an idea for an optional named limit:
Lets call it 'flow':
flow [options] [command]':
-n number of max parallel processes
-c (optional) identifier of the counter.
Example:
for i in {0..9}; do
flow -c myCounter -n 4 echo "$i"
done