silence

stfu.sh

#!/usr/bin/env ash

echo2() {
    local IFS=" "
    printf "%s\n" "$*" >&2
}

note() {
    local IFS=" "
    printf "\033[1m%s\033[0m\n" "$*" >&2
}

stfu() {
    local ret=0
    "$@" > .stdout 2> .stderr || ret=$?
    if test "$ret" -ne 0; then
        printf "command failed with exit status %s:\n" "$ret" >&2
        echo2 "$@"
        echo2
        note '$ tail .stdout'
        tail -n 20 .stdout >&2
        echo2
        note '$ tail .stderr'
        tail -n 20 .stderr >&2
        return "$ret"
    fi
}

overengineered vesion: https://github.com/notwa/rc/blob/master/sh/stfu