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Editorial Team
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Asked: 2026-05-19T16:57:21+00:00

I need a regex that detects a word on a line that contains both

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I need a regex that detects a “word” on a line that contains both letters and numbers and is a certain length, e.g. 812d555c726d10c77b05cd164705665a. The goal is to detect lines that contain sha1 digests.

If a regex-only is too hard, a Ruby solution is OK.

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1 Answer

  1. Editorial Team

    This should do it:

    valid_sha1 = !((str =~ /\b[a-f0-9]{32,}\b/i).nil?)
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