Update April 23 EST PM 9:22
On Debian11 Notices:
1.Checkout the current SHELL: "echo $SHELL
".
2.Choose the current SHELL to root:
su -
sudo chsh -s /usr/bin/zsh
3.Choose the current SHELL to the current user:
sudo chsh -s /usr/bin/zsh usr_name
And, restart or reboot your guest machine(Especially Debian11).
4.Using oh-my-zsh every time you change themes on Debian 11, restart terminal to make
reality that!!!
Refer: