Linux under: XXX isn't in the sudoers file

　　1. Problem description--what

Ready to build a lamp environment on a virtual machine's Linux (Centos) system using: sudo yum install httpd; prompts need to be converted to administrator mode.

So I switched to root using the sudo command, and I found a hint: LMS is isn't in the sudoers file

　　 2. Cause of the problem--when/why

　　The reason:

1.when--When you use sudo to switch root, but not every time you use the command, you will encounter this problem

2.why--LMS user not added to sudo config file

3. Resolution--how

　　　　Solution:--how
1. First need to switch to root identity
$SU-

(SU and su-command differences:

1. Command "su" when only switch to root, but not the root environment variable passed, or the current user's environment variables;

2. Use the "Su-" command to bring the environment variables together, as with the root login)

2. Then: $visudo// Note that there are no spaces between VI and sudo here

1. Move the cursor to the last line
2, press A, enter the Append additional mode
3. Input
Your_user_name (example: LMS) all= (All) all
4. Press ESC
5. Enter ": Wq" (Save the file and exit)

Add yourself to the sudo group above and you can use the sudo command

(PS: There will be a period of time not to write a blog, will be the blog you have written before a certain layout, and then continue to write)

　　

Linux under: XXX isn't in the sudoers file