usermod

CautionModify a user

usermod -aG <group> <user>

Add groups with -aG (forgetting -a REPLACES all groups). -L locks, -U unlocks the account.

Examples

usermod -aG docker taroAdd to docker group
usermod -L taroLock the account

Syntax

usermod [-aG groups] [-L|-U] [-s shell] <user>

Before you run it

Omitting -a wipes existing group memberships.

Related commands

useraddCreate a user
idShow UID/GID and groups
passwdChange password

The same reference, with no signal at all

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