die

#!/bin/bash

# Kills processes based on process name.

usage() {
    echo "usage: ${0##*/} [options] REGEX" 1>&2
    echo "" 1>&2
    echo "kills all processes matching REGEX." 1>&2
    echo ""
    echo "options:"
    echo " -n enables dryrun mode" 1>&2
    echo " -q enables quite mode" 1>&2
    echo " -h or --help shows usage help" 1>&2
    exit 1
}

if echo "$*" | grep -Eq -- '--help\b|-h\b'; then
    usage
fi

DRYRUN=0
QUIET=0
while getopts "hqn" opt; do
    case "$opt" in
    h) usage ;;
    n) DRYRUN=1 ;;
    q) QUIET=1 ;;
    *) usage ;;
    esac
done
shift $((OPTIND - 1))

# shellcheck disable=SC2009
LIST="$(ps -ww -ew -o pid,user,command | grep -Ev "bin/die|grep" | grep -Ei "$1")"
if [ "$LIST" = "" ]; then
    if [[ $QUIET == 0 ]]; then
        echo "no processes found"
    fi
    exit 0
fi

if [[ $QUIET == 0 ]]; then
    echo "$(echo "$LIST" | wc -l) processes found:"
    echo "$LIST"
fi

KCMD="kill -9 $(echo "$LIST" | sed "s/^ *//g" | cut -d" " -f1 | tr '\n' ' ')"

if [[ $DRYRUN == 0 ]]; then
    if [[ $QUIET == 0 ]]; then
        echo -n "running '$KCMD' ... "
    fi
    eval "$KCMD"
else
    if [[ $QUIET == 0 ]]; then
        echo -n "dryrun '$KCMD' ... "
    fi
fi
if [[ $QUIET == 0 ]]; then
    echo "done"
fi