How to check in a script whether the shell is login or non login?

frankie_DJ · 09-06-2005, 03:44 AM

I am sure this has been asked before, but since I can't find it and since I am sure the answer is quite short....I'll ask again.

Thanks.

keefaz · 09-06-2005, 03:54 AM

If using bash, try :

Code:

shopt | grep login_shell

frankie_DJ · 09-06-2005, 04:09 AM

Thanks, I didn't know about shopt...but, now I keep opening xterms (Konsoles to be accurate) and when I 'shopt', in every terminal I open the login_shell toggles are switched to ON. That can't be right. Can it?

keefaz · 09-06-2005, 04:20 AM

Your shell in konsole is a login shell, but if you start a bash script
without the -l option, it won't be a login shell

try :

Code:

#!/bin/bash
echo $(shopt | grep login_shell)

Then execute the script in your konsole terminal

frankie_DJ · 09-06-2005, 04:42 AM

I see what you are saying. Only if it's a child process it is not a login shell. Well, that certainly doesn't solve my problem.

I guess then I should ask my question as: "How can I check in a script whether the current shell is the one in which I actually logged in, gave my uname and password or any other shell that I opened by starting Xserver and clicking on the xterm icon?"

keefaz · 09-06-2005, 06:01 AM

There are some ways, for example echo $TERM, if it is linux, then
you are surelly in a console terminal, so not in X