File appears with ls File butnot ls Folder

Question

simple question.

I have a folder with many files, I'm interested in a particular one, let's call it FILE.

When I run

ls FILE

The path of the file is printed.

However, let's say this file and many others is contained in a FOLDER. when I run:

ls FOLDER

I see many files but not FILE.

How do I debug this behavior? What are the possible causes?

Extra info: FILE is a zip file and I am able to unzip it and see it's content.

Answer 1

Possible reasons

1. Incorrect folder name may be you are doing ls Folder instead of ls FOLDER
2. The FILE may be a hidden one, please check using ls -alh ./Folder
3. Permissions: ls -l FOLDER/FILE