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linux用户管理的方法，常用的linux用户管理命令：useradd , userdel , usermod , users。
一，基本介绍
二，基本操作
[root@bogon ~]# useradd --help
Usage: useradd [options] LOGIN Options: -b, --base-dir BASE_DIR base directory for the home directory of the new account -c, --comment COMMENT GECOS field of the new account -d, --home-dir HOME_DIR home directory of the new account -D, --defaults print or change default useradd configuration -e, --expiredate EXPIRE_DATE expiration date of the new account -f, --inactive INACTIVE password inactivity period of the new account -g, --gid GROUP name or ID of the primary group of the new account -G, --groups GROUPS list of supplementary groups of the new account -h, --help display this help message and exit -k, --skel SKEL_DIR use this alternative skeleton directory -K, --key KEY=VALUE override /etc/login.defs defaults -l, --no-log-init do not add the user to the lastlog and faillog databases -m, --create-home create the user's home directory -M, --no-create-home do not create the user's home directory -N, --no-user-group do not create a group with the same name as the user -o, --non-unique allow to create users with duplicate (non-unique) UID -p, --password PASSWORD encrypted password of the new account -r, --system create a system account -s, --shell SHELL login shell of the new account -u, --uid UID user ID of the new account -U, --user-group create a group with the same name as the user -Z, --selinux-user SEUSER use a specific SEUSER for the SELinux user mapping
简单实例：
useradd -c "This user cannot login to a shell" -s /sbin/nologin username
#添加用户，但是不能登入shell useradd -c "This user login by bash" -s /bin/bash username #添加用户登入用后环境是bash useradd -d /usr/username username #添加用户并指定加目录，默认是/home下面 useradd -s /bin/sh -g group -G adm,root gem #添加用户指定shell,主组是group,从组是adm，root,gem
二，删除用户
[root@bogon ~]# userdel --help
Usage: userdel [options] LOGIN Options: -f, --force force removal of files, even if not owned by user -h, --help display this help message and exit -r, --remove remove home directory and mail spool -Z, --selinux-user remove SELinux user from SELinux user mapping
简单实例：
userdel username
#删除用户(passwd ,shadow)，但是不会删除该用户的家目录 userdel -r username #删除用户，包括家目录
三，修改用户
[root@bogon ~]# usermod --help
Usage: usermod [options] LOGIN Options: -c, --comment COMMENT new value of the GECOS field -d, --home HOME_DIR new home directory for the user account -e, --expiredate EXPIRE_DATE set account expiration date to EXPIRE_DATE -f, --inactive INACTIVE set password inactive after expiration to INACTIVE -g, --gid GROUP force use GROUP as new primary group -G, --groups GROUPS new list of supplementary GROUPS -a, --append append the user to the supplemental GROUPS mentioned by the -G option without removing him/her from other groups -h, --help display this help message and exit -l, --login NEW_LOGIN new value of the login name -L, --lock lock the user account -m, --move-home move contents of the home directory to the new location (use only with -d) -o, --non-unique allow using duplicate (non-unique) UID -p, --password PASSWORD use encrypted password for the new password -s, --shell SHELL new login shell for the user account -u, --uid UID new UID for the user account -U, --unlock unlock the user account -Z, --selinux-user new SELinux user mapping for the user account
简单实例 ：
usermod -d /usr/tttt -m tttt
#移动家目录到/usr/tttt usermod -d /usr/tttt tttt #修改家目录到/user/tttt，原来的/home/tttt还保留 usermod -s /bin/ksh -d /home/z -g developer sam #用户sam的登录Shell修改为ksh，主目录改为/home/z，用户组改为developer
四，查看用户信息：
finger , id
finger 用户名 ----可以查看用户的相关信息，包括用户的主目录，启动shell，用户名等
例子：
[root@bogon srv]# finger spark
[root@bogon srv]# id --help 以上就是linux用户管理的方法与操作实例。 (责任编辑：IT) |