RHEL 7.5 - 如何从组中删除用户？

Question

usermod 没有从组中删除用户的选项

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
  -R, --root CHROOT_DIR         directory to chroot into
  -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 SEUSER     new SELinux user mapping for the user account

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哪些命令和选项用于从组中删除用户？RHEL 7.5

Answer 1

适当的选项是-G，但您没有指定要删除的组，而是指定要保留的组。如果user是group1and的成员group2，则可以group2通过运行删除

usermod -G group1 user

这将更新，user以便唯一的补充组成员身份是group1。

如如何从组中删除用户中所述？，您还可以使用gpasswd：

gpasswd -d user group2

将删除user的group2。