On Wed, Jun 21, 2023 at 09:54:30AM +0100, Kerin Millar wrote: > On Wed, 21 Jun 2023 14:11:28 +0530 > LitHack <litha...@gmail.com> wrote: > > > But why this not worked in zsh. > > I don't use zsh. A fairly plausible explanation would be that its alias > builtin ignores the request to declare an alias, if issued in a subshell.
I don't normally use it either, so let's try it and see: unicorn:~$ zsh greg@unicorn ~ % alias which-command=whence greg@unicorn ~ % (alias) which-command=whence greg@unicorn ~ % (alias x=date; alias) which-command=whence x=date The alias definition occurs in the subshell, but the output of the "alias" command differs from bash's. Running zsh's "alias" output as a command would only give you a variable assignment, not an alias assignment. Cf. bash: unicorn:~$ alias alias cls='tput clear; tput cup 99 0' [...] Bash's output includes the "alias" command name before the x=y bits. Zsh's outpt does not.
