in reply to Shortest way to replace a string

perl -pE"s[30\.00\.\d\d\.\d\d][30.00.00.00]g;" infile > outfile

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With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

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Re^2: Shortest way to replace a string
by choroba (Cardinal) on Sep 11, 2013 at 23:08 UTC
    Or 
    s/(?<=30\.00\.)[0-9][0-9]\.[0-9][0-9]/00.00/g

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    لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
[reply]
[d/l]

      The spec was "shortest" and that's 10 keystrokes longer; and certainly no more efficient :)

      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]

        Short? How about this? 

        s/^(30\.00).*? /$1.00.00 /;

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        UPDATE: Added the missing space in the "replace" bit.

[reply]
[d/l]
        It does not match ٧, though.
        لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
[reply]

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