March 2002 Perl Hardware Store 8

  1. Schwartzian Transform

    • Well-known to Unix shell programmers:

         # Sort file names by file size

         ls -l | sort -n +4 | awk '{print $NF}'

         # Sort output of SOMETHING from most frequent to least

         SOMETHING | uniq -c 
           | sort -nr | awk '{$1=""; print}'

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