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Date: Sun, 12 Aug 2012 02:47:16 +0800
From: orc <orc@...server.ru>
To: musl@...ts.openwall.com
Subject: Re: Priorities for next release?
On Sat, 11 Aug 2012 20:41:57 +0200
Daniel Cegiełka <daniel.cegielka@...il.com> wrote:
> >> Couldn't this code just be fixed to add an argument to usage() and
> >> call usage(argv[0]) or even usage(basename(argv[0])) if preferred?
> >>
> >> Rich
> >
> > Or even progname = basename(argv[0]) with global char *progname ?
>
> Usually it looks like this:
>
> extern char *__progname;
>
> 'extern' means __progname must be available to external objects, so in
> code with main():
>
> #include <stdio.h>
>
> char *__progname;
>
> int main(int argc, char *argv[])
> {
> __progname = argv[0];
> printf("%s\n", __progname);
> return 0;
> }
>
> what you think? It works for me... so why basename(argv[0])?
>
> Daniel
basename() is for stripping path objects, for example, when you run
prog via full path, /bin/true, basename("/bin/true") = "true"
See man 3 basename
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