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Asked: 2026-05-11T15:37:32+00:00

I am looking for a regular expression to determine when any of the values

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I am looking for a regular expression to determine when any of the values in a 32-bit hex value is non-zero.

The data patterns look like 0x00000000 and I want to know when any of the digits is non-zero. For example, if 0x00001000 or 0x10000000 or 0xB000000 would be capture by the regular expression, but not a 0x00000000 pattern. Right now I perform a walking pattern match of

0x[^0] 0x0[^0] 0x00[^0] ... 0x0000000[^0]

This will work, but I much rather have one pattern if possible. Thanks.

Mark

Edit: I didn’t mention as the RegEx was not needed in a program, otherwise I would have used a different approach, but I was using the RegEx to search for values in a log file using UltraEdit. I could have developed a program or some other means to search, but I was just being lazy, just being honest. Ben S solution worked both in UltraEdit and Rad Software Regular Expression Designer. rampion solution didn’t work in either tool, not sure why.

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1 Answer

  1. Why not test the hex value against zero? Simpler, faster, more readable.

    If a regular expressiong is really necessary, 0x0*[1-9a-fA-F][0-9a-fA-F]* should do it.

    It looks for as many zeros as it can until it finds a non-zero hex value, then gathers the rest of the hex regardless of if it’s a zero or not.

    Note: this will match any length hex, not just 32 bits.

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