Unnecessary Shell Calls

• However, I think a lot of folks take this point much too far

• Some useful uses of shell calls include:

  • `ps`

  • system("sort -o output input");

    • (When input is very large, sort uses an external multipass merge algorithm)

  • One of my favorites: $page = `lynx -dump $URL`

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Copyright © 2006 M. J. Dominus