in reply to Memory Question

Would it just be easier to use unix commands to do this? find, sort, grep ... those were unix commands before they were co-opted as Perl keywords. To me, this sounds like a job for the shell, not Perl.

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Re: Re: Memory Question
by l2kashe (Deacon) on Feb 21, 2003 at 20:03 UTC
    While this could be done in the shell, I have found personnally that Perl get things done slightly faster and cleaner than spawning massive chains of shell commands. Its also easier to collect all the info and compare / process it in perl than with shell utils, but then again I am not shell guru by any means.

    Someone pointed out File::Find which will get you rolling, and will be slightly kinder on your system than a 'find' would be. Also there are some decent chapters in the panther book (Advanced Perl Programming) that deal with efficiently comparing 2 hashes, and pulling out the differences between them.

    Best of luck

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[reply]
      While I LOVE Perl, I disagree in this case.

      If the only thing needing to be checked is permissions, the following would suffice: 

      find / -exec ls -l {} \; > /tmp/pass1
find / -exec ls -l {} \; > /tmp/pass2
diff /tmp/pass1 /tmp/pass2

      [download]
      Of course you would tailor the find command as PrimeLord indicated (only get specific files with permissions).

      In my experience, this specific task is faster/easier/efficient using Unix commands.

      Cheers - L~R

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