What option can be used with the ps command to display an entire list of processes across all terminals and including daemons? |
-e |
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 |
How many different kill signals can be sent by the kill command to a given process? |
64 |
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 |
What character, when appended to a command, causes the command to be run in the background? |
& |
When killing a background job with the kill command, the background job ID must be prefixed by what character below? |
% |
After a background process has been started, what command below can be used to move it to the foreground? |
fg |
When there are multiple background processes executing in the shell, the jobs command indicates the most recent one with which symbol? |
+ |
Processes are started with what nice value by default? |
0 |
In order to display a list of at job IDs, what option can be specified to the at command? |
-l |
In a cron table entry, what field specifies the absolute pathname to a command that is to be executed? |
sixth |
What option, when added to the crontab command, opens the vi editor with a user’s cron table? |
-e |
Which of the following is not one of the three main types of Linux commands? |
device calls |
What number indicates the lowest kernel priority (PRI) of a process possible? |
127 |
On a Fedora based system, where are the shell environment and scheduled commands for at stored? |
/var/spool/at |
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. |
What command below is used to display the lineage of a process by tracing its PPIDs until the init daemon? |
pstree |
What can be used on a Linux system to trace the lineage of each child process? |
parent process ID |
Linux ch 9
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