無法使用 useradd 命令添加使用者

我在 CentOS 8.2 上，無法使用useradd命令添加使用者

[root@localhost ~]# useradd -m /home/alice -c "ALICE ADMIN" -s /usr/bin/bash alice
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         
[root@localhost ~]#

該-m選項不帶參數，僅表示將創建主目錄，您需要使用-d指定目錄：

useradd -m -d /home/alice -c "ALICE ADMIN" -s /usr/bin/bash alice

引用自：https://unix.stackexchange.com/questions/615873