Destroy any process matching a PCRE

nuke.zsh

#!/bin/zsh

# Nuclear option: kill any program whose process/command matches a PCRE.
# Options for `kill` are passed directly to it, e.g. `nuke -9 foo` runs `kill -9 pidof_foo`.
# Note: a more portable alternative to $@[-1] may be to `eval last=\$$#` then use `$last`.
# Note: making $@[1,-2] more portable might be a bit harder. I have no clue how it'd be done.
[[ $# -eq 0 ]] && echo "Usage: nuke [KILLOPTS] PROG" && return 1 || ps ax | grep -iP "^(?!.*grep).*$@[-1]" | awk '{print $1}' | xargs -I {} kill $@[1,-2] {}