How to solve the problem that sudo command cannot be found under centos

How to solve the problem that the sudo command cannot be found under centos?

1. Problem description

Scenario:

Execute the following command

$ ssserver -p 443 -k password -m rc4-md5

It prompts insufficient permissions.

So add sudo before the command:

$ sudo ssserver -p 443 -k password -m rc4-md5

It prompts that the command cannot be found.

2. Solution

Switch to the root user and edit the file /etc/sudoers as the root user:

# vim /etc/sudoers

Find Defaults env_reset, change it to Defaults !env_reset,

thenwq! Force save and exit.

Then, switch back to a normal user, such as the user name is xx, edit the configuration file in the user root directory ~/.bashrc

# su xx
$ vim .bashrc

Append

alias sudo='sudo env PATH=$PATH'

at the end of the file , Make the configuration file take effect

$ source ~/.bashrc

Test whether the sudo execution command is normal

$ sudo ssserver -p 443 -k password -m rc4-md5 --user nobody -d start
2016-11-28 12:15:45 INFO     loading libcrypto from libcrypto.so.10
started
$

Related references:centOS tutorial

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