Shell Programming and Scripting

Possible to get this? Thanks

The question is not clear enough. how do you define the last user?

I believe the OP meant to ask if there is a way to tell who modified a file the last time it was modified.

Example:

File is created by user1 and owned by user1 since he created it.
Now user1 has editied many times but so has user2 and user3.

A change was made but I want to ask the person that made the last change what they changed or why.

How can I tell if the change was made by user2 or user3 since ls only shows who the file is owned by?

Simple answer: You can't with standard posix file stats.





There is a more complex answer that might give you what you need though.

Using a file integrity monitor like tripwire, osiris, or auditd can give you that info if it is installed and set to monitor that file.

If not then all is not lost, if you have admin privs (root) you can look at each users history if they have not already removed that entry in their history files.