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Re: Re: Getting current directory

by chromatic (Archbishop)
on Feb 09, 2001 at 18:24 UTC ( [id://57448]=note: print w/replies, xml ) Need Help??

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in reply to Re: Getting current directory
in thread Getting current directory

Whoa, careful with that advice: 
print $ENV{PWD}, "\n";
chdir('perl');

print $ENV{PWD}, "\n";
print `ls`;

[download]
Yeah, I wouldn't normally use the backticks there, but it proves my point. Also, $0 is spoofable. Cwd is a more reliable solution.

Update: You can spoof $0 by using symlinks, at least if your OS supports them.

Replies are listed 'Best First'.
(tye)Re: Getting current directory
by tye (Sage) on Feb 09, 2001 at 18:37 UTC

    Unlike argv[0] in C, $0 in Perl is not spoofable. See FindBin is broken (RE: How do I get the full path to the script executing?) for more details.

    But $0 is certainly inappropriate for getting the full path to "the current working directory" or "where the script was called from" (though I could see misinterpretting this last phrase to mean the full path to the script). $0 often tells you the full path to where the script resides.

            - tye (but my friends call me "Tye")
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