Why I can't change directories using “cd”?

Question

I\'m trying to write a small script to change the current directory to my project directory:

#!/bin/bash
cd /home/tree/projects/java

I save

Answer 1

You can combine Adam & Greg's alias and dot approaches to make something that can be more dynamic—

alias project=". project"

Now running the project alias will execute the project script in the current shell as opposed to the subshell.