Re: reading from external command

[Lawrence Velázquez]

On Thu, Mar 31, 2022, at 9:01 PM, Peng Yu wrote:
> Where?

https://lists.gnu.org/archive/html/help-bash/2022-03/msg00072.html

Reproduced here:

    % cat main.bash; echo
    printf '%s\n' "$BASH_VERSION"

    {
        pid=$!
        while read -r x; do
            echo <(exit 42)
        done
    } < <(builtin printf '%s\n' a b c; exit 99)

    wait "$pid"
    echo "$?"

    % bash main.bash
    5.1.16(1)-release
    /dev/fd/62
    /dev/fd/62
    /dev/fd/62
    99

> Without requiring a temp file?

No temporary files are involved, unless you count the temporary
FIFOs inherent to using process substitution on systems that don't
have /dev/fd.

-- 
vq