One-Liner for In Place Text Replacement of Multiple Files

neversaint has asked for the wisdom of the Perl Monks concerning the following question:

Dear Masters,
Suppose I have all the files in this directory:

[neversaint@bluemoon temp]$ ls
debug.pl  sometext.txt  script1.pl  test1.fasta
[download]

contain "foo" in it. As you can see, these files may contain a free-text or program code.

I want to replace all the "foo" with "bar" in those files, in place. Meaning that I don't want to have a new copy of a those files after replacement. Is there a Perl one-liner to do that?

---
neversaint and everlastingly indebted.......

Comment on One-Liner for In Place Text Replacement of Multiple Files Download Code

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Re: One-Liner for In Place Text Replacement of Multiple Files by shmem (Chancellor) on Apr 06, 2007 at 15:32 UTC
Sure. `perl -pi -e 's/foo/bar' ` [download] To keep "fool" and "barefoot" `perl -pi -e 's/\bfoo\b/bar/' ` [download] --shmem _($_=" "x(1<<5)."?\n".q·/)Oo. G°\ / /\_¯/(q / ---------------------------- \__(m.====·.(_("always off the crowd"))."· ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}	[reply] [d/l] [select]
Re: One-Liner for In Place Replacement of Multiple Files by kyle (Abbot) on Apr 06, 2007 at 15:30 UTC
`perl -pi -e 's/foo/bar/' *` [download] See perlrun for more info.	[reply] [d/l]
Re: One-Liner for In Place Text Replacement of Multiple Files by swares (Monk) on Apr 06, 2007 at 21:34 UTC
If you also need a backup of the modified file try... `perl -p -i.bak -e 's/oldstring/newstring/g' *` [download]	[reply] [d/l]