What does export do in Bash script?

Question

Export is a command used in the bash shell to make use of variables and functions that are to be passed on further to all child processes. It works by including a variable in child process environments. This is done by keeping another environment.

What is export do?

Exports facilitate international trade and stimulate domestic economic activity by creating employment, production, and revenues. Companies that export are typically exposed to a higher degree of financial risk.

What happens when you export in terminal?

The effect of export , as opposed to merely assigning a variable, is that of passing the variable into the environment of all of the shell's child processes. It does not do anything else; it does not modify any of the shell's configuration files.

What is export variable in shell script?

A local shell variable is a variable known only to the shell that created it. If you start a new shell, the old shell's variables are unknown to it. If you want the new shells that you open to use the variables from an old shell, export the variables to make them global.

What does export display do?

It tells X11 applications which screen they should run on. The format of the DISPLAY variable is hostname:display. For local displays, the hostname is often omitted. The reason this variable is needed is because you can have multiple X servers running locally, or you may wish to use a remote display.

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