# id # Display current user and group identity. # More information: <https://www.gnu.org/software/coreutils/id>. # 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 $Follow @igor_chubin cheat.sh tldr