lusermod(1) [centos man page]
lusermod(1) General Commands Manual lusermod(1) NAME
lusermod - Modify an user SYNOPSIS
lusermod [OPTION]... user DESCRIPTION
Modifies the user with name user. OPTIONS
-c, --gecos=gecos Set user's GECOS field to gecos. The GECOS field is traditionally used to store user's real name and other information. -d, --directory=directory Set user's home directory to directory. -g, --gid=gid Change user's primary group ID to gid. If group with ID gid does not exist, a warning is printed, but the operation is performed anyway. -i, --interactive Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration. -L, --lock Lock user's account. This prevents logging in using user's password. -l, --login=name Rename user to name. -m, --movedirectory After changing user's home directory (using the -d option), move the old home directory to the new location. -P, --plainpassword=password Set user's password to password. Note that the password can be viewed while running lusermod using tools such as ps(1). -p, --password=encrypted Set user's password to the password represented by the hash encrypted. Note that the hash can be viewed while running lusermod using tools such as ps(1). -s, --shell=shell Set user's login shell to shell. -U, --unlock Unlock user's account. -u, --uid=uid Change user's user ID to uid. --commonname=name Set user's common name to name. This attribute is only supported in some backends (e.g.LDAP), and its support may have further lim- itations (e.g. LDAP schema rules). --givenname=name Set user's given name to name. This attribute is only supported in some backends (e.g.LDAP), and its support may have further limi- tations (e.g. LDAP schema rules). --homephone=phone Set user's home telephone number to phone. This attribute is only supported in some backends (e.g.LDAP), and its support may have further limitations (e.g. LDAP schema rules). --roomnumber=room Set user's room number to room. This attribute is only supported in some backends (e.g.LDAP), and its support may have further lim- itations (e.g. LDAP schema rules). --surname=name Set user's surname to name. This attribute is only supported in some backends (e.g.LDAP), and its support may have further limita- tions (e.g. LDAP schema rules). --telephonenumber=phone Set user's telephone number to phone. This attribute is only supported in some backends (e.g.LDAP), and its support may have fur- ther limitations (e.g. LDAP schema rules). EXIT STATUS
The exit status is 0 on success, nonzero on error. libuser 2009-12-11 lusermod(1)
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useradd(8) System Manager's Manual useradd(8) NAME
useradd - create a new user account SYNOPSIS
useradd [-D binddn] [-P path] [-c comment] [-d homedir] [-e expire] [-f inactive] [-G group,...] [-g gid] [-m [-k skeldir]] [-o] [-p password] [-u uid] [-U umask] [-r] [-s shell] [--service service] [--help] [--usage] [-v] [--preferred-uid uid] account useradd --show-defaults useradd --save-defaults [-d homedir] [-e expire] [-f inactive] [-g gid] [-G group,...] [-k skeldir] [-U umask] [-s shell] DESCRIPTION
useradd creates a new user account using the default values from /etc/default/useradd and the specified on the command line. Depending on the command line options the new account will be added to the system files or LDAP database, the home directory will be created and the initial default files and directories will be copied. The account name must begin with an alphabetic character and the rest of the string should be from the POSIX portable character class ([A- Za-z_][A-Za-z0-9_-.]*[A-Za-z0-9_-.$]). OPTIONS
-c, --comment comment This option specifies the users finger information. -d, --home homedir This option specifies the users home directory. If not specified, the default from /etc/default/useradd is used. -e, --expire expire With this option the date when the account will be expired can be changed. expiredate has to be specified as number of days since January 1st, 1970. The date may also be expressed in the format YYYY-MM-DD. If not specified, the default from /etc/default/useradd is used. -f, --inactive inactive This option is used to set the number of days of inactivity after a password has expired before the account is locked. A user whose account is locked must contact the system administrator before being able to use the account again. A value of -1 disables this feature. If not specified, the default from /etc/default/useradd is used. -G, --groups group,... With this option a list of supplementary groups can be specified, which the user should become a member of. Each group is separated from the next one only by a comma, without whitespace. If not specified, the default from /etc/default/useradd is used. -g, --gid gid The group name or number of the user's main group. The group name or number must refer to an already existing group. If not speci- fied, the default from /etc/default/useradd is used. -k, --skel skeldir Specify an alternative skel directory. This option is only valid, if the home directory for the new user should be created, too. If not specified, the default from /etc/default/useradd or /etc/skel is used. -m, --create-home Create home directory for new user account. -o, --non-unique Allow duplicate (non-unique) User IDs. -p, --password password Encrypted password as returned by crypt(3) for the new account. The default is to disable the account. -U, --umask umask The permission mask is initialized to this value. It is used by useradd for creating new home directories. The default is taken from /etc/default/useradd. -u, --uid uid Force the new userid to be the given number. This value must be positive and unique. The default is to use the first free ID after the greatest used one. The range from which the user ID is chosen can be specified in /etc/login.defs. --preferred-uid uid Set the new userid to the specified value if possible. If that value is already in use the first free ID will be chosen as described above. -r, --system Create a system account. A system account is an user with an UID between SYSTEM_UID_MIN and SYSTEM_UID_MAX as defined in /etc/login.defs, if no UID is specified. The GROUPS entry in /etc/default/useradd is ignored, too. -s, --shell shell Specify user's login shell. The default for normal user accounts is taken from /etc/default/useradd, the default for system accounts is /bin/false. --service service Add the account to a special directory. The default is files, but ldap is also valid. -D, --binddn binddn Use the Distinguished Name binddn to bind to the LDAP directory. The user will be prompted for a password for simple authentica- tion. -P, --path path The passwd and shadow files are located below the specified directory path. useradd will use this files, not /etc/passwd and /etc/shadow. --help Print a list of valid options with a short description. --usage Print a short list of valid options. -v, --version Print the version number and exit. FILES
/etc/passwd - user account information /etc/shadow - shadow user account information /etc/group - group information /etc/default/useradd - default values for account creation /etc/skel - directory containing default files SEE ALSO
passwd(1), login.defs(5), passwd(5), shadow(5), userdel(8), usermod(8) AUTHOR
Thorsten Kukuk <kukuk@suse.de> pwdutils May 2010 useradd(8)