in reply to Re^3: How do I test if my PERL script was run using a login vs a non-login shell
in thread How do I test if my Perl script was run using a login vs a non-login shell

Login shells typically do different things than non-login shells. For example, the bash shell will behave differently in terms of what user environment scripts it parses and what environment variables it sets, depending on whether it was run as a login or non-login shell, as well as whether it was run in interactive or non-interactive mode (also a command line argument).

Depending on how it's called, my shell script needs to do different things.

  • Comment on Re^4: How do I test if my Perl script was run using a login vs a non-login shell

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Re^5: How do I test if my PERL script was run using a login vs a non-login shell
by Anonymous Monk on May 23, 2012 at 04:44 UTC

    Login shells typically ...

    Yeah, that is the same generic stuff I've read all over the place, that doesn't explain how login shells determine if they're login shells

    Supposedly both zoid and psh can be run as login shells ( chsh ` which psh` ) but there is nothing obvious about how they determine when they're run as login-shells

    Here you can see http://search.cpan.org/grep?cpanid=GREGOR&release=psh-1.8.1&string=login&i=1&n=1&C=4 

    lib/Psh/OS/Win.pm

80-}
81-
82-sub inc_shlvl {
83-     if (! $ENV{SHLVL}) {
84:             $Psh::login_shell = 1;
85-             $ENV{SHLVL} = 1;
86-     } else {
87:             $Psh::login_shell = 0;
88-             $ENV{SHLVL}++;
89-     }
90-}
91-

    [download]
    but that doesn't look spectacularly useful/portable
[reply]
[d/l]

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