If you want to modify all the odd lines of the file in place you can use something like: 

perl -i.bk -lne 's/foo/bar/g if $.%2;print;' foo.txt

[download]

This will substitute all the foo's into bar's that appears in odd lines of the file foo.txt (saving a backup of the original file in foo.txt.bk)

Hope this helps

citromatik

In reply to Re: Search and replace in all odd lines by citromatik
in thread Search and replace in all odd lines by greatshots

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