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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
n-times COUNT -- COMMAND...
n-times -h
EOF
}
help() {
cat <<-'EOF'
Options:
-h, --help show this message
COUNT the number of times for COMMAND to be executed
Examples:
Print 123 5 times:
$ n-times 5 echo 123
EOF
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
while getopts 'h' flag; do
case "$flag" in
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
COUNT="${1:-}"
shift
eval "$(assert-arg "$COUNT" 'COUNT')"
while true; do
if [ "$COUNT" = 0 ]; then
break
fi
COUNT=$((COUNT - 1))
"$@"
done
|
