Update help message

zfs/zfs.set.user.quota.sh

@@ -44,10 +44,16 @@ EXAMPLES :
     - Apply default quota to a given dataset
         ${PROGNAME} --pool "datastore/backup"
 
+    - Apply a given quota by default (100G) and use a quota file for specific user
+        ${PROGNAME} --quota 100G --file /datastore/backup/.duplicati/zfs.quota
+
 OPTIONS :
     -d,--debug
         Enable debug messages.
 
+    -f|--file
+        Specify path to a quota file for specific quota per user.
+
     -h,--help
         Print this help message.
 
@@ -303,15 +309,16 @@ main() {                                                        # {{{
 
 	## Read user one by one
 	while IFS= read -r zfs_username; do
-		### Get quota to use {{{
+		### Define quota to use {{{
 		if [ "${QUOTA_FILE_MODE}" -eq "0" ] \
 		&& grep --word-regexp -- "^${zfs_username}" "${quota_file}" | grep --only-matching --perl-regexp --quiet -- '[[:digit:].]*.$'; then
+			### From quota file if any information for this user
 			user_zfs_quota="$(grep --word-regexp -- "^${zfs_username}" "${quota_file}" |
 				grep --only-matching --perl-regexp -- '[[:digit:].]*.$' \
 				|| error_message "Can't get quota for ${zfs_username} user from ${quota_file} quota file." 4)"
-			debug_message "Apply specific quota (${RED}${user_zfs_quota}${COLOR_DEBUG}) to ${zfs_username} user."
-			exit 0
+			debug_message "Get specific quota (${RED}${user_zfs_quota}${COLOR_DEBUG}) for ${RED}${zfs_username}${COLOR_DEBUG} user from quota file (${RED}${quota_file}${COLOR_DEBUG})."
 		else
+			### Default quota by default
 			user_zfs_quota="${zfs_quota}"
 		fi
 		### }}}