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1. Created a new file in my home directory:

 

cd ~

touch rset

chmod 777 rset

 

2. Edit the file and add the following:

 

#! /bin/bash

cd /opt

 

3. Make the file executable

 

chmod +x rset

 

4. Run the script from my home directory:

 

me@me:~$ ./rset

 

When I run that script the directory does not change and I'm simply presented with another command prompt in the same location.