local/bin/rmirror: Add option to ignore date comparison

.local/bin/rmirror

@@ -6,28 +6,43 @@ Usage: ${0##*/} SOURCE DEST
 
 Use rsync to mirror SOURCE to DEST while showing progress.
 SOURCE does not need to be ending with a trailing slash. Only size is used for
-comparison. File perms and dates are mirrored.
+comparison. File perms and dates are mirrored by default.
 
 A dry-run is made by default.
 
 Options:
 
   -p: Process.
+  -s: Ignore dates when comparing files.
 
 EOF
 }
 
+## We use archive mode '-a' which preserves perms and dates. On non-POSIX
+## filesystems, you might want to skip this and preserve symlinks only by
+## replacing -a with -lr.
+flags="-a"
 opt_dry="-n"
-if [ "$1" = "-p" ]; then
-	opt_dry=""
-	shift
-fi
+while getopts ":hps" opt; do
+	case $opt in
+	h)
+		usage
+		exit ;;
+	p)
+		opt_dry="" ;;
+	s)
+		flags="-lr"
+		OPT_PROCESS=true ;;
+	\?)
+		usage
+		exit 1 ;;
+	esac
+done
+
+shift $(($OPTIND - 1))
 
 [ $# -ne 2 ] && usage && exit 1
 [ "$1" = "-h" ] && usage && exit
 [ "$1" = "--" ] && shift
 
-## We use archive mode '-a' which preserves perms and dates. On non-POSIX
-## filesystems, you might want to skip this and preserve symlinks only by
-## replacing -a with -lr.
-rsync $opt_dry -iv -a --size-only --delete --exclude="/lost+found" --progress -- "$1"/ "$2"
+rsync $opt_dry -iv $flags --size-only --delete --exclude="/lost+found" --progress -- "$1"/ "$2"