chapter 9

When killing a backround job with the kill command you must prefix by using a __________

%

When there are multiple backround processes executing in the shell, the jobs command indicates the most recent one with a _______ symbol

+

To display an entire list of processes across all terminals and including daemons you can add the ____ option to any ps command

-e

Processes are started with a nice value of _______ by default

0

There are _______ different kill signals that the kill command can send to a certain process

64

Does a negative nice value give a process a greater chance of a lower priority

False

The init daemon has a PID of 0

False

The killall command uses the PID to kill a process

False

The ps command is the only command that can view process information

False

The sigint kill signal is the default kill signal used by the kill command

False

Can the sigkill kill signal be trapped by a process

False, no

Can the top command be used to change the priority of processes

False, no

If you send a kill to a process that has children are the child processes terminated?

False, no

Most command such as ls, find, and grep are binary programs that exist on the filesystem until executed

True

While a process is waiting for its parent process to release the PID, the process is said to be in a zombie state.

True

A system process that is not associated with a terminal is called a _____ process

daemon

In the output of the ps -1 command the _____ column is the most valuable to systems administrators because it indicates what the process is currently doing

process state

The _______ kill signal terminates a process by taking the process info in memory and saving it to a file called core on the hard disk in the current working directory

sigquit

The ______ field in a cron table contains the absolute pathname to the command being executed

sixth

You can execute _______ main types of Linux commands

three

each process can start an unlimited number of other processes

true

The _______ option to the ps command displays all proceses that do not run on terminals.

x

can a parent have multiple parent processes

No