diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2019-02-06 01:47:03 +0000 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2019-02-06 03:37:04 +0000 |
| commit | fc81f7f5f0da28d3f7b89bf57c8ddd4f8fd7d4f2 (patch) | |
| tree | ce21db4b55a8feec5c84404614f9477e5940499e /mkinitramfs | |
| parent | c80032179ca00694a70ff71aa5cd0db14a8a45e2 (diff) | |
mkinitramfs: Support -h and --help options
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'mkinitramfs')
| -rwxr-xr-x | mkinitramfs | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/mkinitramfs b/mkinitramfs index 3c3eb6c..4a4a4ea 100755 --- a/mkinitramfs +++ b/mkinitramfs @@ -13,7 +13,7 @@ export BUSYBOXDIR usage() { - cat >&2 << EOF + cat << EOF Usage: ${0} [OPTION]... -o outfile [version] @@ -26,10 +26,15 @@ Options: See mkinitramfs(8) for further details. EOF +} + +usage_error() +{ + usage >&2 exit 2 } -OPTIONS=$(getopt -o c:d:ko:r:v -n "$0" -- "$@") +OPTIONS=$(getopt -o c:d:hko:r:v --long help -n "$0" -- "$@") # Check for non-GNU getopt # shellcheck disable=SC2181 @@ -51,6 +56,10 @@ while true; do exit 1 fi ;; + -h|--help) + usage + exit 0 + ;; -o) outfile="$2" shift 2 @@ -128,7 +137,7 @@ if [ -n "${UMASK:-}" ]; then fi if [ -z "${outfile}" ]; then - usage + usage_error fi touch "$outfile" |