adding license

exec_extra/func.go

@@ -1,7 +1,25 @@
+/*
+   SysUtils - a library to assist with various system-related functions
+   Copyright (C) 2020  Brent Saner
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 package exec_extra
 
 import (
-	`os/exec`
+	"os/exec"
 )
 
 func ExecCmdReturn(cmd *exec.Cmd) (exitStatus int, err error) {