ref: b7bbf17028b775ba74b83871b7cefa2b1ce46ab9
dir: /sys/man/6/users/
.TH USERS 6 .SH NAME users \- file server user list format .SH DESCRIPTION The permanent file servers each maintain a private list of users and groups, in .B /adm/users by convention. Each line in the file has the format .IP .IB id : name : leader :\fImembers\fP .PP where .I name and .I leader are printable strings excluding the characters .LR ? , .LR = , .LR + , .LR - , .LR / , and .LR : , and .I members is a comma-separated list of such strings. Such a line defines a user and a group with the given .IR name ; the group has a group leader given by .I leader and group members given by the user names in .IR members . The .I leader field may be empty, in which case any group member is a group leader. The .I members field may be empty. .PP Lines beginning with .L # are ignored. .PP The .I id in a line is an identifier used in the on-disk structures maintained by a file server; there should be no duplicate .IR id s in the file. In older Plan 9 file servers, .IR id s are small decimal numbers. In those, a negative .I id is special: a user with a negative .I id cannot attach to the file server. The file .B /adm/users itself is owned by user .I adm and write protected to others, so it can only be changed via console commands. .SH "SEE ALSO" .IR intro (5), .IR stat (5),