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linux find and replace in multiple files

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# 1  
Old 09-14-2011
linux find and replace in multiple files
Is there a reason why all of these examples of linux find and replace in multiple files use find and grep to pipe into sed or perl. Why not just use sed or perl directly with something like this?
Code:
sed -i 's/echo/burnbaby/g' booboo*

https://encrypted.google.com/search?...ultiple+files& ie=utf-8&oe=utf-8&aq=t&rls={moz:distributionID}:{moz:locale}:{moz: official}&client=firefox
Last edited by Franklin52; 09-14-2011 at 09:31 AM.. Reason: Please use code tags for code and data samples, thank you
# 2  
Old 09-14-2011
grep or find is only for narrowing the selection.
# 3  
Old 09-14-2011
Just using wildcards in the command line works usually, but it breaks under any of these conditions:
  • If you want to apply more than 1 command
  • If the files where the command should be applied aren't all in the same directory
  • If there are too many files to fit on 1 command line
  • If you want to avoid "is a directory" error messages should a directory have a similar name as the files you want to modify
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