Linux export command is used to set or display environment variables in the Linux operating system. It is a built-in shell command for the bash shell. This command is used to define new variables and to include them in the environment that is available to the currently running shell and to any subshells.
When the export command is used without any arguments, it will display a list of all the environment variables and their values. For example, you can type "export" in the terminal and press Enter to see the current environment variables set in your system.
To set a new environment variable using the export command, you need to specify the variable name followed by the equal sign and the value you want to assign to it. For example, to set a variable named "LANG" with the value "en_US.UTF-8", you would use the command "export LANG=en_US.UTF-8".
Once you have set an environment variable using the export command, it will be available to all the commands and programs that are executed in the current shell session. This can be useful for setting configuration options, defining paths for executable files, and customizing the behavior of various programs.
In addition to setting new environment variables, the export command can also be used to make existing variables available to subshells. This is useful when you want to pass a variable from one shell session to another. For example, if you set a variable in the parent shell and want to access it in a child shell, you can use the export command to make it available in the child shell.
The export command is a powerful tool for managing environment variables in Linux and can be used to customize the behavior of the system to suit your needs. By setting and exporting variables, you can fine-tune the operation of various programs and ensure that your system is configured the way you want it.
Overall, the export command is an essential tool for managing environment variables in Linux and can be used to customize the behavior of the system to suit your needs. Whether you are setting new variables, making existing variables available to subshells, or simply displaying the current environment variables, the export command is a versatile tool that can help you get the most out of your Linux system.
When the export command is used without any arguments, it will display a list of all the environment variables and their values. For example, you can type "export" in the terminal and press Enter to see the current environment variables set in your system.
To set a new environment variable using the export command, you need to specify the variable name followed by the equal sign and the value you want to assign to it. For example, to set a variable named "LANG" with the value "en_US.UTF-8", you would use the command "export LANG=en_US.UTF-8".
Once you have set an environment variable using the export command, it will be available to all the commands and programs that are executed in the current shell session. This can be useful for setting configuration options, defining paths for executable files, and customizing the behavior of various programs.
In addition to setting new environment variables, the export command can also be used to make existing variables available to subshells. This is useful when you want to pass a variable from one shell session to another. For example, if you set a variable in the parent shell and want to access it in a child shell, you can use the export command to make it available in the child shell.
The export command is a powerful tool for managing environment variables in Linux and can be used to customize the behavior of the system to suit your needs. By setting and exporting variables, you can fine-tune the operation of various programs and ensure that your system is configured the way you want it.
Overall, the export command is an essential tool for managing environment variables in Linux and can be used to customize the behavior of the system to suit your needs. Whether you are setting new variables, making existing variables available to subshells, or simply displaying the current environment variables, the export command is a versatile tool that can help you get the most out of your Linux system.
