用户
组
有效用户
实际用户
有效用户ID
实际用户ID
1 -- 用户操作函数
linux-rwdx:~ # useradd --help Usage: useradd ... useradd - create a new user -c comment Set the GECOS field for the new account --show-defaults Print default values --save-defaults Save modified default values -D binddn Use dn "binddn" to bind to the LDAP directory -d homedir Home directory for the new user -e expire Date on which the new account will be disabled -f inactive Days after a password expires until account is disabled -G group,... List of supplementary groups -g gid Name/number of the users primary group -k skeldir Specify an alternative skel directory -m Create home directory for the new user -o Allow duplicate (non-unique) UID -P path Search passwd, shadow and group file in "path" -p password Encrypted password as returned by crypt(3) -u uid Force the new userid to be the given number -r, --system Create a system account -s shell Name of the user's login shell --service srv Add account to nameservice 'srv' --help Give this help list --usage Give a short usage message -v, --version Print program version Valid services for --service are: files, ldap添加一个用户:
linux-rwdx:/home # useradd svn -d /home/svn -g svn linux-rwdx:/home # passwd svn Changing password for svn. New Password: Reenter New Password: Password changed. mkdir /home/svn chown -R svn:svn /home/svn
2 -- 用户组操作函数
linux-rwdx:~ # groupadd --help Usage: groupadd [-D binddn] [-g gid [-o]] [-r] [-P path] [-p password] group groupadd - create a new group -D binddn Use dn "binddn" to bind to the LDAP directory -g gid Force the new groupid to be the given number -o Allow duplicate (non-unique) UID -P path Search passwd, shadow and group file in "path" -p password Encrypted password as returned by crypt(3) -r, --system Create a system account --service srv Add account to nameservice 'srv' --help Give this help list --usage Give a short usage message -v, --version Print program version Valid services for --service are: files, ldap