Add new users in linux and grant sudo execution Permissions

In linux, add new users and grant sudo execution permissions. 1. Add new users adduser xyw-Eliot. 2. Set the passwd xyw-Eliot password. Enter the password three times as prompted when using the sudo command, the following message is displayed: sudo: must be setuid root error, that is, the sudo command cannot be used. Solution: Use su to enter the root user and run: chown root: root/usr/bin/sudo chmod/usr/bin/sudo run the sudo command again. the following error occurs: xyw-Eliot is not in the sudoers file. this incident will be reported. it indicates that xyw-Eliot still does not have the permission to use sudo. Solution: 1) Enter su to enter the root mode. 2) Add the write permission to the file: chmod u + w/etc/sudoers 3) edit the file/etc/sudoers, that is, vim chmod u + w/etc/sudoers, find the "root ALL = (ALL) ALL" line and add xyw-Eliot ALL = (ALL) ALL to change xyw-Eliot to your username based on the actual situation. Save and exit. 4) revoke the file write permission: chmod u-w/etc/sudoers