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This article mainly introduces the method of using linux's id command to display user ID and group ID, which has certain reference value and can be used for reference by friends who need it. Let's take a look at it with me.

The id command displays the real and valid user ID (UID) and group ID (GID). A UID is a single identity for a user. The group ID (GID) corresponds to multiple UID. The id command is pre-installed by default on most Linux systems. To use it, just type id in your console. Entering id without options is displayed as follows. As a result, active users are used.

The id command is very useful when we want to know a user's UID and GID. Some programs may require UID/GID to run. Id makes it easier for us to find the user's UID to GID without having to search in the / etc/group file. As usual, you can enter man id on the console to enter the id manual page for more details.

Syntax format: id [parameter] [user name]

Common parameters:

-g display the ID-G of the group to which the user belongs shows the ID-n display user of the additional group to which the user belongs, the name of the group or additional group to which the user belongs-r displays the actual ID-u display user ID--help display help-- version displays version information

Reference example:

Displays all the information for the current user:

[root@linuxcool ~] # id

Uid=0 (root) gid=0 (root) groups=0 (root)

Displays the ID of the group to which the user belongs:

[root@linuxcool ~] # id-g

0

Displays the ID of the additional group to which the user belongs:

[root@linuxcool] # id-G

0

Displays the specified user information:

[root@linuxcool ~] # id linuxcool

Uid=1000 (linuxcool) gid=1000 (linuxcool) groups=1000 (linuxcool) these are the details of the method of using linux's id command to display user ID and group ID. Have you learned anything after reading it? If you want to know more about it, welcome to the industry information!

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