Hack Attacks Testing How to Conduct Your - Back to Home

494 Appendix A
bg job_number
Places a process in the background as if it had been started with &. This will restart a
stopped background process. The current foreground process can often be stopped
with z. If you have stopped or background jobs, you have to type exit twice consecutively
to log out.
batch
at>updatedbd
Runs any command (usually one that will take more time to complete) when the system
load is low. You can log out and the process will keep running. When the command
is completed, an e-mail will be sent to you with the output. In this example, at>
represents a prompt, the command to run is updatedb, and the terminates
your input to batch. (You could start many commands to run, separated by .)
at 17:00
Executes a command at a specified time. You will be prompted for the command(s) to
run until you press d. The associated commands are atq (displays the queue of
processes started with at) and atrm (removes a process from the at queue).
kill PID
Forces a process shutdown. First determine the PID of the process to kill using ps.
killall program_name
Kills program(s) by name. For example, killall pppd will disconnect your dial-up
network.
nohup program_name
(no hungup). Runs program_name so that it does not terminate when you log out.
Output is redirected to the file nohup.out in your home directory. You surely do not
want to run an interactive program under nohup.
xkill
In X terminal: Kills a GUI-based program with the mouse. Point with your mouse
cursor at the window of the process you want to kill and click.
kpm
In X terminal: The KDE process manager.
lpc
As root: Checks and controls the printer(s). Type ? to see the list of available commands.