Userdel Command Options For Mac

Closes the active window you are currently in. Use Option-Command-W to close all currently active app windows. Further reading: 40 tips to get the most from your Mac (and macOS 'High Sierra. Press Option + Command + P + R Sometimes on a Mac, the PRAM (parameter RAM) and NVRAM (non-volatile RAM) can become corrupt and cause various problems.

Name

useradd - create a new user or update default new user information

Synopsis

useradd [options] LOGIN

By default, a group will also be created for the new user (see -g, -N, -U, and USERGROUPS_ENAB).

Options

The options which apply to the useradd command are:

-b, --base-dirBASE_DIR

The default base directory for the system if -dHOME_DIR is not specified. BASE_DIR is concatenated with the account name to define thehome directory. If the -m option is not used, BASE_DIR must exist.

If this option is not specified, useradd will use the base directory specified by the HOME variable in /etc/default/useradd, or /home bydefault.

-c, --commentCOMMENT

Any text string. It is generally a short description of the login, and is currently used as the field for the user's full name.

-d, --homeHOME_DIR

The new user will be created using HOME_DIR as the value for the user's login directory. The default is to append the LOGIN name toBASE_DIR and use that as the login directory name. The directory HOME_DIR does not have to exist but will not be created if it ismissing.

-D, --defaults

See below, the subsection 'Changing the default values'.

-e, --expiredateEXPIRE_DATE

The date on which the user account will be disabled. The date is specified in the format YYYY-MM-DD.

If not specified, useradd will use the default expiry date specified by the EXPIRE variable in /etc/default/useradd, or an empty string (noexpiry) by default.

-f, --inactiveINACTIVE

The number of days after a password expires until the account is permanently disabled. A value of 0 disables the account as soon as the password hasexpired, and a value of -1 disables the feature.

If not specified, useradd will use the default inactivity period specified by the INACTIVE variable in /etc/default/useradd, or -1 bydefault.

-g, --gidGROUP

The group name or number of the user's initial login group. The group name must exist. A group number must refer to an already existing group.

If not specified, the bahavior of useradd will depend on the USERGROUPS_ENAB variable in /etc/login.defs. If this variable is set toyes (or -U/--user-group is specified on the command line), a group will be created for the user, with the same name as her loginname. If thevariable is set to no (or -N/--no-user-group is specified on the command line), useradd will set the primary group of the new user to the valuespecified by the GROUP variable in /etc/default/useradd, or 100 by default.

-G, --groupsGROUP1[,GROUP2,..[,GROUPN]]]

A list of supplementary groups which the user is also a member of. Each group is separated from the next by a comma, with no intervening whitespace. Thegroups are subject to the same restrictions as the group given with the -g option. The default is for the user to belong only to the initialgroup.

-h, --help

Display help message and exit.

-k, --skelSKEL_DIR

The skeleton directory, which contains files and directories to be copied in the user's home directory, when the home directory is created byuseradd.

This option is only valid if the -m (or --create-home) option is specified.

If this option is not set, the skeleton directory is defined by the SKEL variable in /etc/default/useradd or, by default, /etc/skel.

-K, --keyKEY=VALUE

Overrides /etc/login.defs defaults (UID_MIN, UID_MAX, UMASK, PASS_MAX_DAYS and others).

Example: -KPASS_MAX_DAYS=-1 can be used when creating system account to turn off password ageing, even though system account has nopassword at all. Multiple -K options can be specified, e.g.: -KUID_MIN=100-KUID_MAX=499

Note: -KUID_MIN=10,UID_MAX=499 doesn't work yet.

-l, --no-log-init

Do not add the user to the lastlog and faillog databases.

By default, the user's entries in the lastlog and faillog databases are resetted to avoid reusing the entry from a previously deleted user.

-m, --create-home

Create the user's home directory if it does not exist. The files and directories contained in the skeleton directory (which can be defined with the-k option) will be copied to the home directory.

useradd will create the home directory unless CREATE_HOME in /etc/login.defs is set to no.

-M

Do not create the user's home directory, even if the system wide setting from /etc/login.defs (CREATE_HOME) is set to yes.

-N, --no-user-group

Do not create a group with the same name as the user, but add the user to the group specified by the -g option or by the GROUP variable in/etc/default/useradd.

The default behavior (if the -g, -N, and -U options are not specified) is defined by the USERGROUPS_ENAB variable in/etc/login.defs.

-o, --non-unique

Allow the creation of a user account with a duplicate (non-unique) UID.

This option is only valid in combination with the -o option.

-p, --passwordPASSWORD

The encrypted password, as returned by crypt(3). The default is to disable the password.

Note: This option is not recommended because the password (or encrypted password) will be visible by users listing the processes.

You should make sure the password respects the system's password policy.

-r, --system

Create a system account.

System users will be created with no aging information in /etc/shadow, and their numeric identifiers are choosen in theSYS_UID_MIN-SYS_UID_MAX range, defined in /etc/login.defs, instead of UID_MIN-UID_MAX (and their GID counterparts for thecreation of groups).

Note that useradd will not create a home directory for such an user, regardless of the default setting in /etc/login.defs (CREATE_HOME). Youhave to specify the -m options if you want a home directory for a system account to be created.

-s, --shellSHELL

The name of the user's login shell. The default is to leave this field blank, which causes the system to select the default login shell specified by theSHELL variable in /etc/default/useradd, or an empty string by default.

-u, --uidUID

The numerical value of the user's ID. This value must be unique, unless the -o option is used. The value must be non-negative. The default is to usethe smallest ID value greater than 999 and greater than every other user. Values between 0 and 999 are typically reserved for system accounts.

-U, --user-group

Create a group with the same name as the user, and add the user to this group.

The default behavior (if the -g, -N, and -U options are not specified) is defined by the USERGROUPS_ENAB variable in/etc/login.defs.

-Z, --selinux-userSEUSER

The SELinux user for the user's login. The default is to leave this field blank, which causes the system to select the default SELinux user.

Changing the default values

When invoked with only the -D option, useradd will display the current default values. When invoked with -D plus other options,useradd will update the default values for the specified options. Valid default-changing options are:

-b, --base-dirBASE_DIR

The path prefix for a new user's home directory. The user's name will be affixed to the end of BASE_DIR to form the new user's home directory name,if the -d option is not used when creating a new account.

This option sets the HOME variable in /etc/default/useradd.

-e, --expiredateEXPIRE_DATE

The date on which the user account is disabled.

This option sets the EXPIRE variable in /etc/default/useradd.

-f, --inactiveINACTIVE

The number of days after a password has expired before the account will be disabled.

This option sets the INACTIVE variable in /etc/default/useradd.

-g, --gidGROUP

The group name or ID for a new user's initial group (when the -N/--no-user-group is used or when the USERGROUPS_ENAB variable is set tono in /etc/login.defs. The named group must exist, and a numerical group ID must have an existing entry.

This option sets the GROUP variable in /etc/default/useradd.

-s, --shellSHELL

The name of a new user's login shell.

This option sets the SHELL variable in /etc/default/useradd.

Notes

The system administrator is responsible for placing the default user files in the /etc/skel/ directory (or any other skeleton directory specified in/etc/default/useradd or on the command line). Nokia bb5 pm security code 1.3 free%3a software, free download.

Caveats

You may not add a user to a NIS or LDAP group. This must be performed on the corresponding server.

Similarly, if the username already exists in an external user database such as NIS or LDAP, useradd will deny the user account creation request.

Usernames may only be up to 32 characters long.

Configuration

The following configuration variables in /etc/login.defs change the behavior of this tool:

CREATE_HOME (boolean)

Indicate if a home directory should be created by default for new users.

This setting does not apply to system users, and can be overriden on the command line.

GID_MAX (number), GID_MIN (number)

Range of group IDs used for the creation of regular groups by useradd, groupadd, or newusers.

MAIL_DIR (string)

The mail spool directory. This is needed to manipulate the mailbox when its corresponding user account is modified or deleted. If not specified, acompile-time default is used.

MAIL_FILE (string)

Defines the location of the users mail spool files relatively to their home directory.

The MAIL_DIR and MAIL_FILE variables are used by useradd, usermod

Userdel Command Options For Mac Free

, and userdel to create, move, or delete the user's mailspool.

If MAIL_CHECK_ENAB is set to yes, they are also used to define the MAIL environment variable. Mcl kannamai tamil font pc software download.

MAX_MEMBERS_PER_GROUP (number)

Maximum members per group entry. When the maximum is reached, a new group entry (line) is started in /etc/group (with the same name, same password, and sameGID).

The default value is 0, meaning that there are no limits in the number of members in a group.

This feature (split group) permits to limit the length of lines in the group file. This is useful to make sure that lines for NIS groups are not larger than1024 characters.

If you need to enforce such limit, you can use 25.

Note: split groups may not be supported by all tools (even in the Shadow toolsuite). You should not use this variable unless you really need it.

PASS_MAX_DAYS (number)

The maximum number of days a password may be used. If the password is older than this, a password change will be forced. If not specified, -1 will beassumed (which disables the restriction).

PASS_MIN_DAYS (number)

The minimum number of days allowed between password changes. Any password changes attempted sooner than this will be rejected. If not specified, -1 will beassumed (which disables the restriction).

PASS_WARN_AGE (number)

The number of days warning given before a password expires. A zero means warning is given only upon the day of expiration, a negative value means no warningis given. If not specified, no warning will be provided.

SYS_GID_MAX (number), SYS_GID_MIN (number)

Range of group IDs used for the creation of system groups by useradd, groupadd, or newusers.

SYS_UID_MAX (number), SYS_UID_MIN (number)

Range of user IDs used for the creation of system users by useradd or newusers.

UID_MAX (number), UID_MIN (number)

Range of user IDs used for the creation of regular users by useradd or newusers.

UMASK (number)

The file mode creation mask is initialized to this value. If not specified, the mask will be initialized to 022.

useradd and newusers use this mask to set the mode of the home directory they create

It is also used by login to define users' initial umask. Note that this mask can be overriden by the user's GECOS line (if QUOTAS_ENAB is set)or by the specification of a limit with the K identifier in limits(5).

USERGROUPS_ENAB (boolean)

Enable setting of the umask group bits to be the same as owner bits (examples: 022 -> 002, 077 -> 007) for non-root users, if the uid is the same asgid, and username is the same as the primary group name.

If set to yes, userdel will remove the user's group if it contains no more members, and useradd will create by default a group with thename of the user.

Files

/etc/passwd

Userdel Command Linux

success

1

can't update password file

2

invalid command syntax

3

invalid argument to option

4

UID already in use (and no -o)

6

specified group doesn't exist

9

username already in use

10

can't update group file

12

can't create home directory

13

can't create mail spool

14

can't update SELinux user mapping

See Also

chfn(1), chsh(1), passwd(1), crypt(3), groupadd(8), groupdel(8), groupmod(8), login.defs(5),newusers(8), userdel(8), usermod(8).

Referenced By

chpasswd(8),groupmems(8),jk_addjailuser(8),

Userdel Command Options For Macbook Pro

useradd_selinux

Userdel Command Options For Mac 2017

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