diff options
Diffstat (limited to 'bin/mkchecksum.sh')
| -rwxr-xr-x | bin/mkchecksum.sh | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/bin/mkchecksum.sh b/bin/mkchecksum.sh index 45f3416..5a7ac1f 100755 --- a/bin/mkchecksum.sh +++ b/bin/mkchecksum.sh @@ -2,11 +2,14 @@ main() { - if [ -z "$1" ] - then - usage - exit 1 - fi + # Handle opts + opts "$@" + shift "$OPTS" + unset OPTS + + # Show help + [ "$OPT_HELP_ONLY" ] && usage && exit 0 + [ -z "$1" ] && usage && exit 1 printf "md5 %s\n" "$(md5sum "$1" | cut -f1 -d" ")" printf "sha1 %s\n" "$(sha1sum "$1" | cut -f1 -d" ")" @@ -16,9 +19,30 @@ main() printf "sha512 %s\n" "$(sha512sum "$1" | cut -f1 -d" ")" } +opts() +{ + OPTS=0 + + while getopts ":h" opt + do + case "$opt" in + h) OPT_HELP_ONLY=1 ;; + *) + printf "Invalid option passed: %s\n" "$OPTARG" >&2 + ;; + esac + done +} + usage() { - printf "NYI\n" + cat <<EOF +Usage: + $(basename "$0") -h + $(basename "$0") <file> + +Make a number of checksums of a given file. +EOF } main "$@" |