centos で新しいユーザー名とパスワードを作成する方法

[root@localhost ~]# adduser prefma

[root@localhost~]# passwd prefma Changing password for user prefma. New password: # 输入密码 Retype new password: # 再次输入密码 passwd: all authentication tokens updated successfully.

1 [root@localhost~]# whereis sudoers # 查找sudoers文件路径 2 sudoers: /etc/sudoers /etc/sudoers.d /usr/share/man/man5/sudoers.5.gz 3 [root@localhost~]# ls -l /etc/sudoers # 查看权限 4 -r--r----- 1 root root 3938 Sep 6 2017 /etc/sudoers # 只有读权限 5 [root@localhost~]# chmod -v u+w /etc/sudoers # 赋予读写权限 6 mode of ‘/etc/sudoers’ changed from 0440 (r--r-----) to 0640 (rw-r-----)

## Allow root to run any commands anywhere root ALL=(ALL) ALL prefma ALL=(ALL) ALL #这个是新用户

[root@localhost~]# chmod -v u-w /etc/sudoers mode of ‘/etc/sudoers’ changed from 0640 (rw-r-----) to 0440 (r--r-----)

[prefma@localhost~]$ pwd /home/prefma [prefma@localhost~]$ ls -l /etc/sudoers -r--r----- 1 root root 3995 Oct 16 22:42 /etc/sudoers