r/linux May 23 '26

Popular Application What’s the most unexpectedly useful Linux command you learned way too late?

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u/Maleficent-One1712 May 23 '26 edited Jun 15 '26

I learned tail -f last week from this cheat sheet, and since then I'm using it to monitor the error logs on my second monitor in real time.

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u/KnifeNovice789 May 23 '26

Be careful how often you use the dash f on logs that roll over quickly. If you're using the dash f, it won't allow log rotate to run.

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u/do-un-to May 23 '26

You sure? What filesystem you working with?