Tools for working with processes

• accton - Turns process accounting on and off. Uses the file /var/log/pacct. To turn it on type "accton /var/log/pacct". Use the command with no arguments to turn it off.
• kill - Kill a process by number
• killall - Send a signal to a process by name
• lastcomm (1) - Display information about previous commands in reverse order. Works only if process accounting is on.
• nice - Set process priority of new processes.
• ps(1) - Used to report the status of one or more processes.
• pstree(1) - Display the tree of running processes.
• renice(8) - Can be used to change the process priority of a currently running process.
• sa(8) - Generates a summary of information about users' processes that are stored in the /var/log/pacct file.
• skill - Report process status.
• snice - Report process status.
• top - Displays the processes that are using the most CPU resources.