Golang : How to check if your program is running in a terminal


Your command line application accepts inputs from a terminal only or you just want to test if the application is really running under a terminal. How to check if the application is really running under a terminal?


Use the github.com/mattn/go-isatty package to determine if your application running under Terminal, Windows Cygwin/MSYS2.

For example, running this code ( from github.com/mattn/go-isatty ) under a terminal

 package main

 import (

 func main() {
  if isatty.IsTerminal(os.Stdout.Fd()) {
 fmt.Println("Is Terminal")
  } else if isatty.IsCygwinTerminal(os.Stdout.Fd()) {
 fmt.Println("Is Cygwin/MSYS2 Terminal")
  } else {
 fmt.Println("Is Not Terminal")

will give:

Is Terminal

and if you execute the code under Gogland IDE, you will get Is Not Terminal:



/usr/local/go/bin/go build -i -o /private/var/folders/mt/p1knsj5x45901p6t3q0kxpq40000gn/T/Buildmaingoandrungo



Is Not Terminal

Process finished with exit code 0

Hope this helps!

  See also : Golang : Accept input from user with fmt.Scanf skipped white spaces and how to fix it

By Adam Ng

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