I thought that a a Bash variable (of size 1) can hold any byte from 0 to 255. So any bitstream (in particular files) can fit in a Bash variable. But according to a comment I received, it cannot hold some bytes such as 0. So what are the allowed values (except for alphanumeric characters of course )?
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Related: How do I use null bytes in Bash? – steeldriver Oct 24 '20 at 01:51