28 lines
522 B
Plaintext
28 lines
522 B
Plaintext
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#!/bin/sh -e
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# POSIX shell variant for ubase respawn
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usage() {
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printf 'usage: %s [-d N] cmd [args...]\n' "${0##*/}"
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exit "${1:-0}"
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}
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die() { printf '%s\n' "$@" >&2; exit 1;}
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case "$1" in
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-d) [ "$3" ] || usage 1
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[ "$2" -gt 0 ] || die "Not a number: $2"
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delay=$2; shift 2
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;;
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--help|-h|'') usage ;;
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-*) usage 1
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esac
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while :; do
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"$@" || err=$?
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case $err in
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# Usually Ctrl+C interrupt.
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12[7-9]|130) exit 0
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esac
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[ "$delay" ] && sleep "$delay"
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done
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