How to get to which tty the user is currently switched to

网路癫癫

My brother is currently working on a program to run a program in the background to determine which tty the current user has switched to, and then pop up the newt window or the gtk window according to the current tty is a character terminal or xwindows, but how to judge, please hero Suggestion

萧水寒

Just run the tty command

网路癫癫

So how do you do it programmatically?


I still have to look at the source code of tty-_ ~~~~

萧水寒

I read / proc / self / fd / 0 and see where the link goes

franklynfang

Check the environment variables to get it