Linux ch 9

On a Fedora based system, where are the shell environment and scheduled commands for at stored?​

/var/spool/at

Processes are started with what nice value by default?

0

What kill signal stops a process, then restarts it with the same PID?

SIGHUP

Which 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?

SIGQUIT

​In the process state column, what does an "R" indicate?

The process is currently running on the processor.

When viewing the output of the ps ax​ command, what does a < symbol in the STAT column indicate for a process?

The process is high priority.

Which of the following is not one of the three main types of Linux commands?​

device calls

After a background process has been started, what command below can be used to move it to the foreground?

fg

What can be used on a Linux system to trace the lineage of each child process?​

parent process ID

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

process state

What command below is used to display the lineage of a process by tracing its PPIDs until the init daemon?​

pstree

In a cron table entry, what field specifies the absolute pathname to a command that is to be executed?

sixth

When killing a background job with the kill command, the background job ID must be prefixed by what character below?

%

What character, when appended to a command, causes the command to be run in the background?

&

When there are multiple background processes executing in the shell, the jobs command indicates the most recent one with which symbol?

+

What option can be used with the ps command to display an entire list of processes across all terminals and including daemons?

-e

What option, when added to the crontab command, opens the vi editor with a user's cron table?

-e

In order to display a list of at job IDs, what option can be specified to the at command?

-l

What number indicates the lowest kernel priority (PRI) of a process possible?​

127

How many different kill signals can be sent by the kill command to a given process?

64