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Perl: the Markov chain saw

Re^3: One liner to subtract by 2

by choroba (Bishop)
on Jul 24, 2013 at 14:10 UTC ( #1046125=note: print w/replies, xml ) Need Help??

in reply to Re^2: One liner to subtract by 2
in thread One liner to subtract by 2

Thanks, fixed.
لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

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Re^4: One liner to subtract by 2
by Anonymous Monk on Jul 24, 2013 at 14:28 UTC

    Thanks Guys

    the header is on the first line of my file so I'm doing the following

    perl -pe 's/(0-9{10})$/sprintf("%010d", $1-2)/e if $. ==1' TONYFILE.DAT

    for some reason it's not changing the's still 496

    any idea what i'm missing here?

      This outputs the new contents to the standard output. If you want to change the file, you have to add the -i flag:
      perl -i~ -pe ...
      لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

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