USERADD

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	useradd −D
	useradd −D [éé¡¹]

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é»è®¤ä¸ï¼ä¹ä¼ä¸ºç¨æ·åå»ºç» (å¯ç −g, −N, −Uï¼å USERGROUPS_ENAB)ã

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−b, −−base−dir BASE_DIR

å¦ææ²¡æä½¿ç¨ −d HOME_DIRï¼åä½¿ç¨é»è®¤çåºç®å½ãBASE_DIR å ä¸è´¦æ·åå°±æ¯ä¸»ç®å½ãå¦ææ²¡æä½¿ç¨ −m éé¡¹ï¼BASE_DIR å¿é¡»å·²ç»å- å¨ã

å¦æéé¡¹æ²¡ææå®ï¼useradd å°ä½¿ç¨ /etc/default/useradd ä¸ç HOME åéï¼æèé»è®¤ç /homeã

−c, −−comment COMMENT

−d, −−home−dir HOME_DIR

−D, −−defaults

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−e, −−expiredate EXPIRE_DATE

å¦ææ²¡ææå®ï¼useradd å°ä½¿ç¨ /etc/default/useradd ä¸ EXPIRE åéæå®çé»è®¤è¿ææ¥æï¼æèä¸ä¸ªç©ºåç¬¦ä¸²(ä¸è¿æ)ã

−f, −−inactive INACTIVE

å¦ææªæå®ï¼useradd å°ä½¿ç¨ /etc/default/useradd ä¸ç INACTIVE æå®çé»è®¤ç¦ç¨å¨æï¼æèé»è®¤ä¸º −1ã

−g, −−gid GROUP

å¦ææ²¡ææå®ï¼ useradd çè¡ä¸ºå°ä¾èµäº /etc/login.defs æä»¶ä¸ç USERGROUPS_ENAB åæ°ãå¦ææ¤åæ°è®¾ç½®ä¸ºäº yes (æèå¨å½ä»¤è¡ä¸æå®äº −U/−−user−group)ï¼å°ä¼ä¸ºç¨æ·åå»ºä¸ä¸ªç»ï¼ç»ååç»å½åç¸åãå¦æéé¡¹è®¾ç½®ä¸ºäº no (æèå¨å½ä»¤è¡ä¸æå®äº −N/−−no−user−group)ï¼useradd ä¼ææ°ç¨æ·çä¸»ç»è®¾ç½®ä¸º /etc/default/useradd ä¸ GROUP åéæå®çå¼ï¼åæèé»è®¤æ¯ 100ã

−G, −−groups GROUP1[,GROUP2,…[,GROUPN]]]

−h, −−help

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−k, −−skel SKEL_DIR

è¿ä¸ªéé¡¹åªæå¨æå® −m (æ −−create−home) éé¡¹æ¶æææã

å¦ææ¤é¡¹æ²¡æè®¾ç½®ï¼éª¨æ¶ç®å½ä½¿ç¨ /etc/default/useradd ä¸ç SKEL çåéæé»è®¤ä¸º /etc/skelã

å¦æå¯ä»¥ï¼ä¹å¤å¶ ACL åæ©å±å±æ§ã

−K, −−key KEY=VALUE

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

Example: −K PASS_MAX_DAYS=−1 can be used when creating system account to turn off password aging, even though system account has no password at all. Multiple −K options can be specified, e.g.: −K UID_MIN=100 −K UID_MAX=499

−l, −−no−log−init

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

−m, −−create−home

−M, −−no−create−home

ä¸åå»ºç¨æ·ä¸»ç®å½ï¼å³ä½¿ç³»ç»å¨ /etc/login.defs ä¸çè®¾ç½® (CREATE_HOME) ä¸º yesã

−N, −−no−user−group

ä¸è¦åå»ºååç»ï¼èæ¯å°ç¨æ·æ·»å å° −g éé¡¹æå®çç»ï¼ææ ¹æ® /etc/default/useradd ä¸ç GROUP åéã

å¦ææ²¡ææå® −g, −N å −U éé¡¹ï¼é»è®¤è¡ä¸ºç± /etc/login.defs ä¸ç USERGROUPS_ENAB åéæå®ã

−o, −−non−unique

åè®¸ä½¿ç¨éå¤ç UID åå»ºç¨æ·è´¦æ·ã

æ¤éé¡¹åªæå −u éé¡¹ç»åä½¿ç¨æææã

−p, −−password PASSWORD

å å¯äºçå¯ç ï¼å°±å crypt(3) çè¿åå¼ãé»è®¤ä¸ºç¦ç¨å¯ç ã

æ¨åºè¯¥ç¡®ä¿å¯ç ç¬¦åç³»ç»çå¯ç æ¿çã

−r, −−system

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System users will be created with no aging information in /etc/shadow, and their numeric identifiers are chosen in the SYS_UID_MIN−SYS_UID_MAX range, defined in /etc/login.defs, instead of UID_MIN−UID_MAX (and their GID counterparts for the creation of groups).

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

−R, −−root CHROOT_DIR

Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

−P, −−prefix PREFIX_DIR

Apply changes in the PREFIX_DIR directory and use the configuration files from the PREFIX_DIR directory. This option does not chroot and is intended for preparing a cross−compilation target. Some limitations: NIS and LDAP users/groups are not verified. PAM authentication is using the host files. No SELINUX support.

−s, −−shell SHELL

ç¨æ·çç»å½ shell åãé»è®¤ä¸ºçç©ºï¼è®©ç³»ç»æ ¹æ® /etc/default/useradd ä¸ç SHELL åééæ©é»è®¤çç»å½ shellï¼é»è®¤ä¸ºç©ºåç¬¦ä¸²ã

−u, −−uid UID

è¯·åè −r éé¡¹å UID_MAX çæè¿°ã

−U, −−user−group

åå»ºä¸ä¸ªåç¨æ·ååçç»ï¼å¹¶å°ç¨æ·æ·»å å°ç»ä¸ã

å¦ææ²¡ææå® −g, −N å −U éé¡¹ï¼é»è®¤è¡ä¸ºç± /etc/login.defs ä¸ç USERGROUPS_ENAB åéæå®ã

−Z, −−selinux−user SEUSER

−b, −−base−dir BASE_DIR

è¿ä¸ªéæ©å¨ /etc/default/useradd ä¸è®¾ç½® HOME éé¡¹ã

−e, −−expiredate EXPIRE_DATE

ç¦ç¨æ¤ç¨æ·è´¦æ·çæ¥æã

æ¤éé¡¹å¨ /etc/default/useradd ä¸è®¾ç½® EXPIRE åéã

−f, −−inactive INACTIVE

å¯ç è¿æå°è´¦æ·è¢«ç¦ç¨ä¹åçå¤©æ°ã

è¿ä¸ªéé¡¹å¨ /etc/default/useradd ä¸è®¾ç½® INACTIVE åéã

−g, −−gid GROUP

æ°ç¨æ·åå§ç»çç»åæ ID (ä½¿ç¨äº −N/−−no−user−group æè /etc/login.defs ä¸çåé USERGROUPS_ENAB è®¾ç½®ä¸º no æ¶)ãç»åºçç»å¿é¡»åå¨ï¼å¹¶ä¸æ°åç» ID å¿é¡»æä¸ä¸ªå·²ç»åå¨çé¡¹ã

è¿ä¸ªéé¡¹å¨ /etc/default/useradd ä¸è®¾ç½® GROUP åéã

−s, −−shell SHELL

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è¿ä¸ªéé¡¹å¨ /etc/default/useradd è®¾ç½® SHELL åéã

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CAVEATS

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CREATE_HOME (boolean)

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GID_MAX (number), GID_MIN (number)

useraddï¼groupadd æ newusers åå»ºçå¸¸è§ç»çç» ID çèå´ã

GID_MIN å GID_MAX çé»è®¤å¼åå«æ¯ 1000 å 60000ã

MAIL_DIR (string)

MAIL_FILE (string)

å®ä¹ç¨æ·é®ç®±æä»¶çä½ç½®(ç¸å¯¹äºä¸»ç®å½)ã

MAIL_DIR and MAIL_FILE åéç± useraddï¼usermod å userdel ç¨äºåå»ºãç§»å¨æå é¤ç¨æ·é®ç®±ã

å¦æ MAIL_CHECK_ENAB è®¾ç½®ä¸º yesï¼å®ä»¬ä¹è¢«ç¨äºå®ä¹ MAIL ç¯å¢åéã

MAX_MEMBERS_PER_GROUP (number)

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PASS_MAX_DAYS (number)

PASS_MIN_DAYS (number)

PASS_WARN_AGE (number)

SUB_GID_MIN (number), SUB_GID_MAX (number), SUB_GID_COUNT (number)

If /etc/subuid exists, the commands useradd and newusers (unless the user already have subordinate group IDs) allocate SUB_GID_COUNT unused group IDs from the range SUB_GID_MIN to SUB_GID_MAX for each new user.

The default values for SUB_GID_MIN, SUB_GID_MAX, SUB_GID_COUNT are respectively 100000, 600100000 and 10000.

SUB_UID_MIN (number), SUB_UID_MAX (number), SUB_UID_COUNT (number)

If /etc/subuid exists, the commands useradd and newusers (unless the user already have subordinate user IDs) allocate SUB_UID_COUNT unused user IDs from the range SUB_UID_MIN to SUB_UID_MAX for each new user.

The default values for SUB_UID_MIN, SUB_UID_MAX, SUB_UID_COUNT are respectively 100000, 600100000 and 10000.

SYS_GID_MAX (number), SYS_GID_MIN (number)

useraddãgroupadd æ newusers åå»ºçç³»ç»ç»çç» ID çèå´ã

SYS_GID_MIN å SYS_GID_MAX çé»è®¤å¼åå«æ¯ 101 å GID_MIN−1ã

SYS_UID_MAX (number), SYS_UID_MIN (number)

useradd æ newusers åå»ºçç³»ç»ç¨æ·çç¨æ· ID çèå´ã

SYS_UID_MIN å SYS_UID_MAX çé»è®¤å¼åå«æ¯ 101 å UID_MIN−1ã

UID_MAX (number), UID_MIN (number)

useradd æ newusers åå»ºçæ®éç¨æ·çç¨æ· ID çèå´ã

UID_MIN å UID_MAX çé»è®¤å¼åå«æ¯ 1000 å 60000ã

UMASK (number)

ä¹è¢« login ç¨äºæå®ç¨æ·çåå§ umaskãæ³¨æï¼æ¤æ©ç å¯ä»¥è¢«ç¨æ·ç GECOS è¡è¦ç(å½è®¾ç½®äº QUOTAS_ENAB æ¶)ï¼ä¹å¯ä»¥è¢«å¸¦ K æç¤ºç¬¦ç limits(5) å®ä¹çéå¶å¼è¦çã

USERGROUPS_ENAB (boolean)

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/etc/passwd

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/etc/shadow

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/etc/group

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/etc/gshadow

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/etc/default/useradd

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/etc/skel/

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/etc/subgid

Per user subordinate group IDs.

/etc/subuid

Per user subordinate user IDs.

/etc/login.defs

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can’t update SELinux user mapping

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

Etiquetas: 8, Administración, useradd, zh_CN

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USERADD (zh_CN)