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grinder (1100)

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Yahoo! ID: perlgrinder (Add User, Send Message)

Editor of p5p summaries, member of the p5p peanut gallery.

Journal of grinder (1100)

Thursday September 27, 2007
06:05 AM

Bitten by glob crypto context

[ #34555 ]

/me is annoyed

I just spent a while chasing a stupid bug. I have an big log directory that I have to clean up. The number of files caused the shell's wildcard expansion to fail. So I wrote some perl to move things around.

And it didn't do anything. To cut a long story short, I needed the total number of files in the directory. So I had something along the lines of:

perl -le 'print scalar(glob("*"))'

That does not return the number of files. It returns the name of the first file. Or the last. I don't care.

You have to force array context and throw it away:

perl -le 'print scalar(()=glob("*"))'

This prints 31192. I wish Perl didn't do this. Nice interview question though, I guess.

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