Your prompt says:
The part between
That represents the folder you're currently in.
~ is shorthand for your home folder (
/home/Peter). See this section of the Ubuntu community documentation for more information about abbreviations in directory names, and related concepts.
You ran the command
cd Rubyscript. The folder name after
cd did not start with a
/, so it is a relative path--relative to your current location (which is
cd Rubyscript, run from there, is thus equivalent to:
Rubyscript folder is not located in
/home/Peter. As the
find command said, it's located in
Therefore, you should run this command instead:
That will get you there. (Assuming you have permission to enter that folder. Which you probably do--its volume name looks like a UUID, and its length indicates it's probably an NTFS volume. If you mounted an NTFS volume, you usually can enter any folder within it and perform any read or write action.)