How Does a Program Know Where it is Running?

[Dave Mielke]

[quoted lines by Karl Dahlke on 2004/05/02 at 19:58 +0000]

>getcwd()

No, that's not reliable since chdir() might've been called. getcwd() is only
reliable if it's called right at the start before any other code might've
called chdir(). Also, since argv[0] can ultimately be set to anything by the
invoker of the program, it isn't 100% reliable anyway. A common case in which
it, by definition, is wrong is when login prepends a minus sign to the name of
the shell.

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