Here's a #bash pop quiz.

[vwbusguy@mastodon.online]

@rl_dane @decathorpe [[ supports everything [ does. [[ is the bash-ism where [ is POSIX, and test in bash is a built-in, IIRC. None of this negates what I said in my previous post.

[rl_dane@polymaths.social]

@vwbusguy @decathorpe

My understanding is that test | [ ] was branched off into [[ ]] for string/filename analysis/comparison, and (( )) for numerical operations.

[[ ]] does seem to retain the legacy -gt | -lt operators of test | [ ], which is kinda cursed, admittedly.

[vwbusguy@mastodon.online]

@rl_dane @decathorpe No, what [[ adds is stuff like && and || for and/or logic and using ! for negation. It supports the same evals as test, and I should also note that "test", [, [[ are built-ins for bash, so it's not actually calling the test binary in a script unless you give the full path to it.

[ddlyh@topspicy.social]

@rl_dane
I just use `test` directly for everything as it makes more sense, so the above would be `test ! -z 1 && echo "true" || echo "false"`, which is actually readable!
@vwbusguy @decathorpe

[vwbusguy@mastodon.online]

@ddlyh @rl_dane @decathorpe test -n would be the equivalent one in this case.