Delete blank lines

bash

sed '/^$/d' file.txt

Explanation

A common cleanup step before diffing or processing text.

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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Same sheet · prioritizing sed Line Deletion and Printing

Skip lines that begin with `#`.

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Remove lines 5 through 10.

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Use sed as a pattern filter.

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Show lines 5 through 10.

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Substitute one match in each line.

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Substitute every match on each line.

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