Miscellaneous: permissions
Read permissions for a directory and execute permissions for it are not the same:
- Read: read directory, obtain a list of filenames
- Execute: lets users pass through the directory when it is a component of a pathname being accessed
Cannot create a new file in a directory unless user has write permissions and execute permission in that directory
To delete an existing file, the user needs write and execute permissions in the directory containing the file, but does not need read or write permission for file itself (!!!)