useradd 命令

Usage: useradd [options] LOGIN

       useradd -D

       useradd -D [options]

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

  -R, --root CHROOT_DIR         directory to chroot into

  -P, --prefix PREFIX_DIR       prefix directory where are located the /etc/* files

  -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

常用：

useradd testuser -c "c参数后面接注释信息" -p "用户密码"

useradd testuser -M -s /sbin/nologin

#用户testuser 没有家目录，也不可以登陆

删除用户userdel -r testuser

useradd与adduser的区别：centos上基本没有区别，ubuntu上有差别，

详细参考：https://www.cnblogs.com/whitehorse/p/5847278.html

巴特西

centos useradd 命令详解

useradd与adduser的区别：centos上基本没有区别，ubuntu上有差别，

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