How to kill all background processes in zsh?

Question

As in the title - how to kill all background processes in zsh?

Answer 1

alias killbg='kill ${${(v)jobstates##*:*:}%=*}'

. It is zsh, no need in external tools.

If you want to kill job number N:

function killjob()
{
    emulate -L zsh
    for jobnum in $@ ; do
        kill ${${jobstates[$jobnum]##*:*:}%=*}
    done
}
killjob N