Linux environment variable Settings command export

The Linux Export command is used to set or display environment variables.

When executing a program in the shell, the shell provides a set of environment variables. Export can add, modify, or delete environment variables for use by subsequent executing programs. Export is only valid for that landing operation.

Grammar

Export [-fnp][variable name]=[variable setting value]

Parameter description:

-F represents the function name in [variable name]. -n Deletes the specified variable. The variables are not actually deleted, but are not exported to the execution environment of the subsequent directives. -p lists all the environment variables that the shell assigns to the program.

Instance:

List all current environment variables

Export-p

Defining environment variables

Export myenv=123

Tip: You can also write export myenv= "123", double quotes are optional.

Above transfer from: http://www.runoob.com/linux/linux-comm-export.html

Linux environment variable Settings command Export (GO)