CS303 UNIX, SHELL PROGRAMMING AND ADMINISTRATION

User-id (UID) – name and unique id for each user (number)

Group-id (GID) – name and unique id for each group (number)

file  /etc/passwd contains the UID(s) and GID(s)

file /etc/group  contains the GID(s) – both name and number

$id – command to see your own UID and GID