serv: add test command (for nginx -t, cupsd -t and so on)

bin/serv

@@ -223,6 +223,9 @@ check_command()
     edit)
         serv_cmd=edit         # HELPCMD: edit service file overload (use --full to edit full file)
         ;;
+    test|-t)
+        serv_cmd=test         # HELPCMD: test a config file of the service
+        ;;
     *)
         return 1
         ;;

bin/serv-test

+#!/bin/sh
+#
+# Copyright (C) 2020  Etersoft
+# Copyright (C) 2020  Vitaly Lipatov <lav@etersoft.ru>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+serv_test()
+{
+	local SERVICE="$1"
+	shift
+
+	case $SERVICE in
+		cups|cupsd)
+			docmd cupsd -t
+			;;
+		nginx)
+			docmd nginx -t
+			;;
+		sshd)
+			docmd sshd -t
+			;;
+		httpd2|httpd|apache|apache2)
+			if which httpd2 >/dev/null 2>/dev/null ; then
+				docmd httpd2 -t
+			elif which apache2 >/dev/null 2>/dev/null ; then
+				docmd apache2 -t
+			fi
+			;;
+		*)
+			fatal "$SERVICE is not supported yet. Please report if you know how to test"
+			;;
+	esac
+}