adding equivalent of os.isatty

terminal/funcs.go

@@ -0,0 +1,40 @@
+/*
+   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 terminal
+
+import (
+	"os"
+	"fmt"
+)
+
+// IsShell returns true if the program is running inside an interactive shell (interactive invocation, sudo, etc.), and false if not (cron, ssh exec, pipe, etc.).
+// Thanks to https://rosettacode.org/wiki/Check_output_device_is_a_terminal#Go
+func IsShell() (interactive bool) {
+
+	var stdoutStat os.FileInfo
+
+	stdoutStat, _ = os.Stdout.Stat()
+
+	if (stdoutStaf.Mode() & os.ModeCharDevice) != 0 {
+		interactive = True
+	}
+
+	return
+}