NAME group - user group file DESCRIPTION The /etc/group file is a text file that defines the groups on the system. There is one entry per line, with the following format: group_name:password:GID:user_list The fields are as follows: group_name the name of the group. password the (encrypted) group password. If this field is empty, no password is needed. GID the numeric group ID. user_list a list of the usernames that are members of this group, separated by commas.
adm:x:4:syslog,sinoiot landscape:x:106: sinoiot:x:1000: admin:x:107:sinoiot mlocate:x:108: