What is the syntax for setting environment variables in Linux?

What is the syntax for setting environment variables in Linux?

In Linux, you can set an environment variable using the syntax: export VARIABLE_NAME=value. For example, export PATH=/usr/local/bin:$PATH.

Can I set multiple variables at once?

Yes, you can set multiple variables in one command by separating them with a space, like this: export VAR1=value1 VAR2=value2.

How do I check if an environment variable is set?

You can check if an environment variable is set by using the echo command, like this: echo $VARIABLE_NAME. If it's set, it will display its value.

What if I want to make the variable permanent?

To make an environment variable permanent, you can add the export command to your shell's configuration file, like ~/.bashrc or ~/.bash_profile.