Verify MD5SUMS but only print failures

md5sum --check MD5SUMS | grep -v ": OK"
All valid files are withheld so only failures show up. No output, all checks good.

6
By: gpenguin
2009-10-02 05:21:17

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What Others Think

This was the default behaviour of md5um(1) many years ago, only errors was reported, and if you wanted to see the good ones, add -v. It was changed to display everything by default, and the -v option disappeared. The change is extremely annoying, as it breaks with a fundamental UNIX philosophy: Be quiet. Don't say that things is OK, only report errors, because it's _those_ files you're interested in. And it's inefficient, as there might be thousands of lines generated by md5sum which is of no use and has to be filtered away.
sunny256 · 454 weeks and 5 days ago
SHA-1 is more secure than MD5 and is rapidly becoming the new industry standard. Use sha1sum instead of md5sum. That said, any integrity checking is better than none!
savanik · 453 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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