• gpasswd — Industry-standard method of administering the /etc/group file.• pwck, grpck — Tools used for the verification of the password, group, and associated shadowfiles.• pwconv, pwunconv — Tools used for the conversion of passwords to shadow passwords andback to standard passwords.For an overview of users and group management, refer to the Red Hat Enterprise LinuxIntroduction to System Administration. For a detailed look at command line tools for managingusers and groups, see the chapter titled User and Group Configuration in the Red HatEnterprise Linux System Administration Guide.2. Standard UsersTable 6.1, “Standard Users” lists the standard users configured in the /etc/passwd file by anEverything installation. The groupid (GID) in this table is the primary group for the user. SeeSection 3, “Standard Groups” for a listing of standard groups.User UID GID Home Directory Shellroot 0 0 /root /bin/bashbin 1 1 /bin /sbin/nologindaemon 2 2 /sbin /sbin/nologinadm 3 4 /var/adm /sbin/nologinlp 4 7 /var/spool/lpd /sbin/nologinsync 5 0 /sbin /bin/syncshutdown 6 0 /sbin /sbin/shutdownhalt 7 0 /sbin /sbin/haltmail 8 12 /var/spool/mail /sbin/nologinnews 9 13 /etc/newsuucp 10 14 /var/spool/uucp /sbin/nologinoperator 11 0 /root /sbin/nologingames 12 100 /usr/games /sbin/nologingopher 13 30 /var/gopher /sbin/nologinftp 14 50 /var/ftp /sbin/nologinnobody 99 99 / /sbin/nologinrpm 37 37 /var/lib/rpm /sbin/nologinvcsa 69 69 /dev /sbin/nologindbus 81 81 / /sbin/nologinntp 38 38 /etc/ntp /sbin/nologincanna 39 39 /var/lib/canna /sbin/nologinChapter 6. Users and Groups90
