Re: not sure about number comparison

[Lawrence Velázquez]

On Sun, Feb 19, 2023, at 2:50 PM, Greg Wooledge wrote:
> On Sun, Feb 19, 2023 at 02:15:41PM -0500, Roger wrote:
>> Any notes on POSIX compliance?  Or as it sounds if most are doing it, is it
>> already considered mostly POSIX compliant?
>
> I went out of my way to say "bash" repeatedly, because (( )) and [[ ]]
> are both bash extensions.
>
> If you have to do this in POSIX, you only have test and [ ].
>
> if test "$x" -lt 5; then
>     echo "too small"

I guess one could do this in a POSIX shell.  It might even be
sensible, if the expression were sufficiently complex.

    if test "$((x < 5))" -ne 0; then
        echo 'too small'
    fi

-- 
vq