Update README.md

README.md

@@ -21,6 +21,10 @@ Once downloaded you need to create an alias for your shell guides found below:
 [Powershell Guide for alias](https://stackoverflow.com/questions/24914589/how-to-create-permanent-powershell-aliases)  
 
 Once you've created an alias for the program you need to set an env variable (author_file) in your shell. This should be the path pointing to your author.txt file  
+For bash you just need to add this:
+```
+export author_file='path/to/your/aurhor.txt'
+```
 [Powershell guide for env variable](https://stackoverflow.com/a/714918)
 
 you can now run it using the alias shorthand you assigned to it