$ \time --version
time (GNU Time) UNKNOWN
Copyright (C) 2018 Free Software Foundation, Inc.
...
$ /bin/true --version
true (GNU coreutils) 8.32
Copyright (C) 2020 Free Software Foundation, Inc.
...
$ \true --version
$ echo 'nothing was printed on the previous line'
Estou usando Ubuntu 22.04, GNU bash, versão 5.1.16 (também testado com zsh 5.9).