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  CentOS6.6 ordinary users to use sudo command to borrow root user privileges
  Add Date : 2018-11-21      
  First, description

Ordinary users Hadoop use: tar -xzvf ns2.35.tar.gz command to extract a file, the system prompts can not find the file, the directory can not be opened, so the thought of using the sudo command to borrow root user privileges: sudo tar -xzvf ns2.35 .tar.gz

The results suggest that: username is not in the sudoers file This incident will be reported..

Second, resolve

CentOS system installation is complete acquiescence ordinary users can not use the sudo command to borrow root with permissions, add the permissions for the user in / etc / sudoers file.

Third, step

1, in the terminal as root user login

$ Su -

Enter the root password

2, edit / etc / sudoers file, add the following command

#vi / etc / sudoers

In the root ALL = (ALL) ALL Add the following line

username ALL = (ALL) ALL

Note: The above username into your own common user name.

1.vi / etc / sudoers enter the command line mode, to edit the file, enter i, that enter the insert edit mode

2. Add more complete command, click the Esc button, then enter the command line mode

3. Then enter: wq to save and exit express, enter a colon, then enter wq

If you do not want to enter a password each time you use sudo command, which can also add the following command

username ALL = (ALL) NOPASSWD: ALL

Note: The above username into your own common user name.

Fourth, the results

You can use the command sudo tar -xzvf ns2.35.tar.gz extracting file, that root user privileges can be used by ordinary users.
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