The sudo problem of ubuntu16.04

Problem Description:

I created the test user through Useradd test and created the directory for that user through mkdir test, and then Chown-r test/home/test the directory and its subdirectory permissions to the test user.

I then switched to the user via the SU Test command, and installed the relevant software using the sudo apt-get install command, but reported the following information:

Test is not in the sudoers file.  This incident'll be reported

Of course, the execution of the command failed, not to achieve the effect that should occur.

It was found that ordinary users would have to add some content to the/etc/sudoers file if they wanted to have the sudo command right.

Steps to resolve the problem:

(1) First switch to root user execution chmod u+w/etc/sudoers add sudo file Write permission
(2) Edit sudoers file vim/etc/sudoers
(3) Add the following in/etc/sudoers:

Find this location:
# User Privilege Specification
Root all= (all:all) all (default exists)
Test all= (All:all) All (this is new)

This solves the problem of the test user installing the software using the sudo command.

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The sudo problem of ubuntu16.04