I'm a first semester student, searched everywhere with no luck, I have 2 questions in an assignment that are basically the same - or at least that's what I think.

First: You want to protect yourself from deleting with your DEL command your program named PROG.EXE. Specify some ways to do this.

Second: Write a command through which a file Pass.log could be protected by deleting with a command del Pass.log

Is there a way to protect them from DEL command within cmd?

On windows:

• You can set the file as read only . (Right click on file -> properties -> General Tab -> check the "read only" checkbox) Or using command: Attrib +R 1.txt

• Using Security tab you can add a "Deny" on the modify privilege from the file. (Right click on file -> properties -> Security tab -> Edit for each line check the Deny near Modify)

On Unix/Linux: You can remove the write privilege from every one using chmod command. like chmod -w PROG.EXE

For the second task: (on windows)

• Attrib +R 1.txt command will set the file as read only.
• icacls 1.txt /deny <User>:M command will set the security deny for User for Modification and deletion. you shoud put your user instead of <User>
• icacls 1.txt /deny <User>:D command will prevent you only the deletion of the file not the modification of it (even to an empty file)