Question

You will have to experiment with using chmod on the folder and the file to come up with the following:

Find the chmod commands for both the folder and the file that you would use to give the minimum permissions for You (the owner) to be able to edit and change the file (and I don’t want to see 777! ? ) :
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Answer 1

Answer

I believe you have some idea about the command chmod. Small recap of permissions.

U G   O
rwx-rwx-rwx

Where
U - Is user/ owner
G - Group

2*2 2*1 1
4 2 1
i.e. 2 exp 0, 2 exp 1, 2 exp 2
In total max what you can have is 4 + 2 + 1 = 7
That means 7 = (Read + Write + Execute)
e.g. chmod 777 means you are granting Read + Write + Execute to Owner, Group and Others

Since you are looking for read and write for the owner - use chmod 644 for files.
However, 644 will NOT work for directory. Directory should have 7 (Read + Write + Execute) for user or the owner but inside the directory, owner can have only read and write permissons on the files. If you provide 644 on the directory, the user/ owner will NOT be able to access the directory as shown below.

Hence for folder/ directory always have 755 set, inside which you can provide 644 for all the files. 644 means Read, Write for user/ owner, Read for Group and Others.

For directory

For files

Summary

For directory use this command - chmod 755 <directory_name>

For files use this command - chmod 644 * , where * indicates all the files residing in that directory