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| author | Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi> | 2014-11-02 23:06:08 +0200 |
|---|---|---|
| committer | Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi> | 2014-11-02 23:09:11 +0200 |
| commit | 2c30048a65b6eff35bc5017b7ad0aa452d87e8a4 (patch) | |
| tree | 4dc2b91b1e5b1a7c9f2358071b7bd5145f9130e2 | |
| parent | f9650395728287a13570ff5bb9de76727c228fb4 (diff) | |
| download | alpine-conf-2c30048a65b6eff35bc5017b7ad0aa452d87e8a4.tar.bz2 alpine-conf-2c30048a65b6eff35bc5017b7ad0aa452d87e8a4.tar.xz | |
update-kernel: help on usage
| -rw-r--r-- | update-kernel.in | 44 |
1 files changed, 34 insertions, 10 deletions
diff --git a/update-kernel.in b/update-kernel.in index 9344dd8..f30ca97 100644 --- a/update-kernel.in +++ b/update-kernel.in @@ -20,8 +20,30 @@ SIGNALS="HUP INT TERM" TMPDIR= features= -OPTS=$(getopt -l build-dir:,flavor:,feature:,package: -n $SCRIPT -o b:f:F:p: \ - -- "$@") +error() { + echo "$SCRIPT: $1" >&2 +} + +usage() { + [ "$2" ] && error "$2" + local opts="[-F <feature>]... [-p <package>]..." + cat >&2 <<EOF + +Syntax: $SCRIPT $opts [<dest_dir>] + $SCRIPT -f <flavor> $opts <dest_dir> + $SCRIPT -b <build_dir> $opts [<dest_dir>] + +Options: -b|--build <build_dir> Install custom-built kernel + -f|--flavor <flavor> Install kernel of specified flavor + -F|--feature <feature> Enable initfs feature + -p|--package <package> Additional module or firmware package + +EOF + exit $1 +} + +OPTS=$(getopt -l build-dir:,flavor:,feature:,help,package: -n $SCRIPT \ + -o b:f:F:hp: -- "$@") || usage 1 eval set -- "$OPTS" while :; do case "$1" in @@ -34,6 +56,9 @@ while :; do -F|--feature) features="$features $2" ;; + -h|--help) + usage 0 + ;; -p|--package) PACKAGES="$PACKAGES $2" ;; @@ -47,16 +72,12 @@ done DESTDIR=$2 -error() { - echo "$1" >&2 - exit 1 -} - [ "$BUILDDIR" -a "$FLAVOR" ] && \ - error "Cannot specify both build directory and flavor" + usage 1 "Cannot specify both build directory and flavor" if [ -z "$DESTDIR" ]; then - [ "$FLAVOR" ] && error "Cannot specify flavor when updating the current kernel" + [ "$FLAVOR" ] && \ + usage 1 "Cannot specify flavor when updating the current kernel" while read MOUNT; do set -- $MOUNT @@ -66,7 +87,10 @@ if [ -z "$DESTDIR" ]; then break done < /proc/mounts - [ "$MNTDIR" ] || error "Module loopback device not mounted" + if [ -z "$MNTDIR" ]; then + error "Module loopback device not mounted" + exit 1 + fi fi remount() { |