grep for ascii nul

MJ mafsys1234 at
Fri Nov 1 04:25:35 UTC 2019

On 1/11/2019 2:07 pm, thor wrote:
> There is NO such thing as filenames containing 0x00 inside the filename. UNIX filenames are strings in C meaning and may contain any 8-bit values except "/" which delimits the subdirectory names and 0x00 which marks the end of filename string.
> At least it was so when I first met Unix, and I hope Bill Gates never influenced Unix since this time.

Nope you're right, no \0 allowed in filenames. None, nada, zilch.

> On 11/01/19 10:48, Victor Sudakov wrote:
>> Dear Colleagues,
>> How can I print the names of files containing ascii nul (\x0)? The
>> FreeBSD "grep -l" does not seem to be able to do it.
>> NB I don't need to delete the nul character with sed or tr, just need to
>> find files containing it.

If you do find a file with it in, I suggest you bottle it and place it alongside your unicorn.


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