Modify the Linux environment variable PATH

Add ":/usr/local/bin" to PATH="/usr/local/sbin:/usr/sbin:/usr/bin:/sbin:/bin" in vim /etc/environment # 
The path that needs to be added, Add: separated in front 
Effective method: System restart 
Expiry date: Permanently valid 
User limitation: For all users

View environment variables: echo $PATH

or:

(Only valid for the current user permanently)

Set environment variables
(1) Open the configuration file

Run the following command:

$ gedit ~/.bashrc

(2) Add command

Add the following command at the end of the file:

export PATH=$PATH:/usr/local/go/bin

export GOPATH=/home/gopath

(3) The order takes effect

run the following command

$ source ~/.bashrc

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centos system

vi /etc/profile

Add the following two lines of code at the end of the file

PATH=/usr/local/webserver/php/bin:$PATH
export PATH

PS: /usr/local/webserver/php/bin is the bin path that needs to be added, separated by colons:

If the modification just now takes effect immediately, you need to execute the following code

source /etc/profile

echo $PATH view

Expiry date: permanent

User Limitation: For all users