$ curl cheat.sh/

# gpasswd
# Administer `/etc/group` and `/etc/gshadow`.
# More information: <https://manned.org/gpasswd>.

# Define group administrators:
sudo gpasswd -A user1,user2 group

# Set the list of group members:
sudo gpasswd -M user1,user2 group

# Create a password for the named group:
gpasswd group

# Add a user to the named group:
gpasswd -a user group

# Remove a user from the named group:
gpasswd -d user group

$

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