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grep files from list

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I am trying to run grep against a list of a few hundred files: $ head -n 3 <(cat files.txt) admin.php ajax/accept.php ajax/add_note.php However, even though I am grepping for a string that I know is found in the files, the following does not search the files: $ grep -i 'foo' <(cat files.txt) $ grep […]
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460
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grep inside less?

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I’m currently sifting through a lot of unfamiliar logs looking for some issues. The first file I look at is Events.log, and I get at least three pages in less which appear to display the same event at different times – an event that appears to be fairly benign. I would like to filter this […]
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Oneliners: Removing blank lines from a unix file

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Many of times I receive comma delimited files an they have blank lines after each record. I would like to use sed or awk. I need to remove all the blank lines from an input file and write into an output file.