You can only kill processes which you own. Communicating with Others or System Administrator UNIX provides several commands for communicating with other users on the system. The most commonly used method is by mail. To use mail, open the Mail icon in the Front Panel window. When you first use mail, it will create a Mail directory under your home directory to keep track of your mail.
Mail is easier to use and is the preferred mail utility.
If you are editing a file when, for some reason, the editor is aborted or killed, the system will mail you a message. After reading this mail message, delete it so your mailbox will not become cluttered with useless mail and consume disk quota. If you need to restore files or directories, fill out the Restore Form . The final responsibility for files rests with the user. If you have any important files, it is in your interest to make another directory and copy your files into it.