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resolving symbolic links in a pathname

by PerlDisciple (Novice)
on Nov 23, 2007 at 01:04 UTC ( #652465=perlquestion: print w/replies, xml ) Need Help??

PerlDisciple has asked for the wisdom of the Perl Monks concerning the following question:

Hello Monks,

There's a resolvepath system call in Unix (man pages section 2, unistd.h on Solaris) that resolves all the symbolic links of its pathname argument. Does anyone know of a way, via CPAN module or otherwise, to get the same functionality in Perl?


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Re: resolving symbolic links in a pathname
by merlyn (Sage) on Nov 23, 2007 at 01:25 UTC
      Pardon the not-very-useful wild guess, but wasn't there a nice example program in some old Camel Book that would print out an output like
      /home/mjd/foo.c /home/mjd/bar/baz/foo.c /home/mjd/bar-1.0/baz/foo.c /userhomes/m/j/mjd/bar-1.0/baz/foo.c /mnt/homevol/m/j/mjd/bar-1.0/baz/foo.c
      as it progressively resolved the symlinks in higher and higher components of a path?

      I thought it might have been one of those abandoned items in the Perl source eg/ directory, but I couldn't find it there, so the Camel Book was my next guess.

      Addendum: This looks kinda interesting too.

        Yeah, in the pink Camel Book. I posted it here some time ago: Re: Following symlinks manually (historical code)



        _($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                                      /\_¯/(q    /
        ----------------------------  \__(m.====·.(_("always off the crowd"))."·
        ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}
      Thanks Randal.
Re: resolving symbolic links in a pathname
by dwu (Monk) on Nov 23, 2007 at 01:21 UTC
    Funny, Googling perl symbolic pathname turned up File::Find fairly quickly. See $File::Find::fullname in that document for something that sounds like it would work for you.

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