# id > Display current user and group identity. > More information: . - Display current user's ID (UID), group ID (GID) and groups to which they belong: `id` - Display the current user identity as a number: `id -u` - Display the current group identity as a number: `id -g` - Display an arbitrary user's ID (UID), group ID (GID) and groups to which they belong: `id {{username}}`