Tips for obtaining Linux user information: simply obtain the current user information

Linux practical tips: easily obtain the current user information

In the Linux operating system, it is often necessary to obtain the current user's information, such as user name, user ID, affiliation Group etc. This information is very important for system administration and debugging. This article will introduce several methods to obtain the current user's information and provide specific code examples.

1. Use thewhoamicommand: The

##whoamicommand can be used to obtain the username of the current user. This is a simple and commonly used method, suitable for quickly obtaining basic information about the current user.

$ whoami

Use the
2. idcommand: The

idcommand can display the user ID, group ID and other details of the current user. information. Here is an example to get current user details:

$ id

Using
3. echo $USEREnvironment variable:

$USER in Linux environmentEnvironment variables store the username of the current user. You can print out the current user name through theechocommand:

$ echo $USER

Use the
4. wcommand:

w Thecommand can display the user information currently logged into the system, including user name, terminal, login time, etc. The following is an example of viewing the current user information:

$ w

Use the
5. lognamecommand: The

lognamecommand is used to get the current The login name of the logged in user, similar towhoami. The following is an example of obtaining the current logged-in username:

$ logname

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