Exam 10: Managing Linux Processes

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Describe the system cron table. How it is organized, and what information may be contained within it?

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After a process has been started, you can change its priority by using the renice command.

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You can execute ____ main types of Linux commands.

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In the output of the ps -l command, the ____ column is the most valuable to systems administrators because it indicates what the process is currently doing.

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How does the nice value affect process priority? How and why can nice values be altered?

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

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

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The ____ kill signal stops a process then restarts it with the same PID.

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The killall command uses the PID to kill a process.

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Match each term with the correct statement below.
Daemon used to schedule a command to execute once in the future.
at daemon
A process's identifier that allows the kernel to identify it uniquely.
cron daemon
The location of system cron tables.
/var/spool/cron
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Daemon used to schedule a command to execute once in the future.
at daemon
A process's identifier that allows the kernel to identify it uniquely.
cron daemon
The location of system cron tables.
/var/spool/cron
Directory storing the shell environment and scheduled commands.
PID
Identifies the process that started another process.
program
The location of user cron tables.
PPID
Ignoring a kill signal.
/var/spool/at
Daemon used to schedule a command to execute repeatedly in the future.
/etc/crontab
An executable file on the hard disk that can be run when you execute it.
trapping
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To create or edit a user cron table, you can use the ____ option to the crontab command.

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The ____ field in a cron table contains the absolute pathname to the command to be executed.

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