Linux Permission the different between delete and create a file dr‐x‐‐‐‐‐x. 3 joey joey 4096 Oct 12 2014 . drwxr‐xr‐x. 4 root root 4096 Oct 12 2014 .. ‐rw‐r‐‐r‐‐. 1 joey joey 18 May 22 2012 .bash_logout ‐rw‐r‐‐r‐‐. 1 joey joey 176 May 22 2012 .bashrc ‐‐w‐rw‐r‐‐. 1 joey ta 111 Feb 16 2014 ourGoal drwxrwx‐‐‐. 3 joey joey 4096 Nov 24 2014 project ‐rw‐r‐‐rw‐. 1 joey ta 492 Mar 11 2015 reportx peter is the member of wm group and John is the member of ta. 1. if the guy(peter,joey,john) wants to read the file(reportx),the minimal permission is it .with x and file with r? or i don't need the x permission of . 2. if (peter,joey,john) want to create a file and edit the file(ourGoal), is it i need .with x and (ourGoal) with w? 3. if (peter,joey,john) want to delete the file(reportx), is it i need . whit x and . with w? This 3 parts i can't really understand, and thx for helping.

Creating and deleting files is based on **directory** permissions. Since only Joey has access to the directory no one else can create or delete files in that folder.

To read the file you need to have `r` access to it. To write to the file you need to have `w` access to it. In your case, anyone can read `reportx` and everyone in the group `ta` can modify it. Also, anyone can write to `ourGoal` but only members of ta or joey can read it.