How to check in a script whether the shell is login or non login?
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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?
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?"
The importance of using a login shell is the any settings in `/home/user/.bash_profile` will get executed. Here is a little more information if you are interested (from `man bash`)
When bash is invoked as an interactive login shell, or as a non-interactive shell with the --login option, it first reads and
executes commands from the file /etc/profile, if that file exists. After reading that file, it looks for ~/.bash_profile,
~/.bash_login, and ~/.profile, in that order, and reads and executes commands from the first one that exists and is readable.
The --noprofile option may be used when the shell is started to inhibit this behavior.
> 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?
if ps h $PPID | grep -q login; then echo login; fi