Shulou(Shulou.com)06/02 Report--

Editor to share with you what is the use of su and sudo in the linux system, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Generally speaking, we will recommend that you do not log in to the server directly using the root account, but use the ordinary account to log in, and wait until you have to use the root user to switch identities. Next, let's talk about the two identity switching commands su and sudo.

Su

The su command is used to switch from the current user to the new user, and when switching to the new user identity, you need to enter the password of the switching user.

General usage: su-user name

-or-l: when you change your identity, you also change the working directory and HOME,SHELL,USER,logname. In addition, the PATH variable will be changed

Here is a demonstration of the use of this command:

$id # the current user is adminuid=1005 (admin) gid=1006 (admin) groups=1006 (admin) $su-# if you do not enter a user name, you will switch to the root user Password:

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