Login shell?

[Thomas Hameenaho]

One way of deciding wether or not the current shell is the login shell
is the fact that the name of the login shell is prependended with a '-'.
If for instance I run tcsh as my login shell it will be exec:ed with
-tcsh as argv[0].

Just take the output from ps -x (or -f if on system V) grep for pid $$
and check if the command name begins with a '-'. If that is the case the
shell is the login shell.

-- 
Real life:	Thomas Hameenaho		Email:	thomas at uplog.{se,uucp}
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