What is env in linux

In Linux, env refers to "environment variable", which is a tool used to view or set the current user environment variable information. The syntax is "env [option] [-] [name=value] [command [Parameters]]"; if all subsequent parameters are omitted and the "env" statement is executed directly, all environment variables in the system and their assignments can be listed.

#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

env is the environment variable

env is a tool, or a Linux command.

In Linux, env is used to view or set the current user environment variable information

Linux env command syntax

env [选项] [-] [名称=值] [命令[参数]]

The meaning of each option in the command is as follows As shown in the table:

#If you omit all subsequent parameters and directly execute the "env" statement, you can list all environment variables in the system and their assignments:

Common variable query

env | egrep -i "user|mail|pwd|loginname"

Related recommendations: "Linux Video Tutorial"

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