Perl one-liner to remove from a text file all lines that contain only whitespace.

Other Ways To Do It (mostly not one-liners) can be found at the thread "How do I remove blank lines from text files?".

Hmmm... personally, I like Ovid's example below better than mine.   It *does* seem more directly recognizable.



perl -i.bak -ne 'print unless /^\s+$/' file.txt

In reply to (code) One-liner removes whitespace-only lines from text file by ybiC

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