sysupgrade: clarify online help

Fixes #12346.

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
SVN-Revision: 34975

diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 4b009ad878b2e5faf768aaf80d2b5a49bfcaa556..67019307d1aadf66fa79a329bfc7d028b0a50da0 100755 (executable)
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -47,27 +47,30 @@ export ARGC="$#"
 
 [ -z "$ARGV" -a -z "$NEED_IMAGE" -o $HELP -gt 0 ] && {
        cat <<EOF
-Usage: $0 [options] <image file or URL>
+Usage: $0 [<upgrade-option>...] <image file or URL>
+       $0 [-q] [-i] <backup-command> <file>
 
-Options:
+upgrade-option:
        -d <delay>   add a delay before rebooting
        -f <config>  restore configuration from .tar.gz (file or url)
        -i           interactive mode
        -c           attempt to preserve all changed files in /etc/
-       -b / --create-backup <file>
+       -n           do not save configuration over reflash
+       -F | --force
+                    Flash image even if image checks fail, this is dangerous!
+       -q           less verbose
+       -v           more verbose
+       -h | --help  display this help
+
+backup-command:
+       -b | --create-backup <file>
                     create .tar.gz of files specified in sysupgrade.conf
                     then exit. Does not flash an image. If file is '-',
                     i.e. stdout, verbosity is set to 0 (i.e. quiet).
-       -r / --restore-backup <file>
+       -r | --restore-backup <file>
                     restore a .tar.gz created with sysupgrade -b
                     then exit. Does not flash an image. If file is '-',
                     the archive is read from stdin.
-       -n           do not save configuration over reflash
-       -F / --force
-                    Flash image even if image checks fail, this is dangerous!
-       -q           less verbose
-       -v           more verbose
-       -h / --help  display this help
 
 EOF
        exit 1
@@ -75,8 +78,8 @@ EOF
 
 [ -n "$ARGV" -a -n "$NEED_IMAGE" ] && {
        cat <<-EOF
-               -b/--create-backup and -r/--restore-backup do not perform a firmware upgrade.
-               Do not specify both -b/-r and a firmware image.
+               -b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
+               Do not specify both -b|-r and a firmware image.
        EOF
        exit 1
 }