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-rwxr-xr-xpackage/base-files/files/sbin/sysupgrade5
1 files changed, 4 insertions, 1 deletions
diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 3d76bb3a0e..7efb2b4365 100755
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -10,6 +10,7 @@ export SAVE_CONFIG=1
export SAVE_OVERLAY=0
export DELAY=
export CONF_IMAGE=
+export HELP=0
# parse options
while [ -n "$1" ]; do
@@ -21,6 +22,7 @@ while [ -n "$1" ]; do
-n) export SAVE_CONFIG=0;;
-c) export SAVE_OVERLAY=1;;
-f) export CONF_IMAGE="$2"; shift;;
+ -h|--help) export HELP=1; break;;
-*)
echo "Invalid option: $1"
exit 1
@@ -36,7 +38,7 @@ export CONF_TAR=/tmp/sysupgrade.tgz
export ARGV="$*"
export ARGC="$#"
-[ -z "$ARGV" ] && {
+[ -z "$ARGV" -o $HELP -gt 0 ] && {
cat <<EOF
Usage: $0 [options] <image file or URL>
@@ -48,6 +50,7 @@ Options:
-n do not save configuration over reflash
-q less verbose
-v more verbose
+ -h / --help display this help
EOF
exit 1