Re: How to read \000?

[Grisha Levit]

On Wed, May 15, 2024 at 3:22 PM Peng Yu <pengyu.ut@gmail.com> wrote:
>
> Hi,
>
> $ echo -ne '\000a' | { read -N 1 x; declare -p x ; }
> declare -- x="a"
>
> read just skip \000 and read the next char "a". What if I want to read
> the underlying character, in this case, it is \000, then x should be
> just an empty string.
>
> Can this be achieved somehow in bash?

LC_ALL=C IFS= read -r -d '' -n 1 VAR

if $? is 0 and $VAR is empty, a null byte has been read