To export a environment variable you run the export command while setting the variable. We can view a complete list of exported environment variables by running the export command without any arguments. To view all exported variables in the current shell you use the -p flag with export.

How do I see environment variables in Linux?

The most used command to displays the environment variables is printenv . If the name of the variable is passed as an argument to the command, only the value of that variable is displayed. If no argument is specified, printenv prints a list of all environment variables, one variable per line.

How do I export a variable in Linux?

For example, Create the variable called vech, and give it a value “Bus”:

1. vech=Bus. Display the value of a variable with echo, enter:
2. echo “$vech” Now, start a new shell instance, enter:
3. bash. …
4. echo $vech. …
5. export backup=”/nas10/mysql” echo “Backup dir $backup” bash echo “Backup dir $backup” …
6. export -p.

29 мар. 2016 г.