usermod

Modify a user account. See also: users, useradd, userdel. More information: https://manned.org/usermod.

sudo usermod --login new_username username

sudo usermod --uid id username

sudo usermod --shell path/to/shell username

sudo usermod --append --groups group1,group2,... username

sudo usermod --move-home --home path/to/new_home username