$ cat file.txt 
old/path/to/some/file
another/old/path/to/some/file
one/more/old/path/to/some/file

$ perl -pe 's#\bold(?=/path/to/some/)#new#g' file.txt 
new/path/to/some/file
another/new/path/to/some/file
one/more/new/path/to/some/file

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But I don't think that's what you meant. That means your sample input & output isn't representative enough of the actual problem.

In reply to Re: Writing to a file by Anonymous Monk
in thread Writing to a file by victorz22

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