Unix Interview Questions - 32 | Snaprecruit.com
Unix Interview Questions - 32 | Snaprecruit.com
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Unix interview questions part 32
Unix interview questions part 32
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Total Questions: 20
1. Which option is preferred while killing a process using SIGKILL signal (9)?
A. -p
B. -s
C. -h
D. -d
Show Correct Answer
Correct Answer is :
-s
2. Which of the followings command(s) is used to kill the login shell?
A. kill 0
B. kill -9 $$
C. kill -s KILL 0
D. kill -9 $$ and kill -s KILL 0
Show Correct Answer
Correct Answer is :
kill -9 $$ and kill -s KILL 0
3. Kill -l will list all the signal numbers on our machine.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
4. What is a job?
A. group of tasks
B. group of commands
C. group of processes
D. group of signals
Show Correct Answer
Correct Answer is :
group of processes
5. Which of the following command is used to suspend a job?
A. ctrl-Z
B. ctrl-Q
C. bg
D. $
Show Correct Answer
Correct Answer is :
ctrl-Z
6. Which command will push the current foreground job to the background?
A. bg
B. fg
C. ctrl-Z
D. kill
Show Correct Answer
Correct Answer is :
bg
7. ____ command will bring the background jobs to the foreground.
A. bg
B. fg
C. ctrl-Z
D. kill
Show Correct Answer
Correct Answer is :
fg
8. The command fg %1 will bring the first background job to the foreground.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
9. The command bg %2 is valid.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
10. What does the following command do? $ kill %2
A. kills job number 2
B. kills the second background job
C. invalid command
D. kill all foreground & background jobs
Show Correct Answer
Correct Answer is :
kills the second background job
11. Which of the following is not a part of job control facilities?
A. relate a job to the background
B. bring it back to the foreground
C. kill a job
D. create a new job
Show Correct Answer
Correct Answer is :
create a new job
12. POSIX shell provides job control facilities like bg or fg.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
FALSE
13. Which command is used to list the status of jobs?
A. fg
B. JOBS
C. jobs
D. fg
Show Correct Answer
Correct Answer is :
jobs
14. We can schedule a job to run at a specified time of day using _______ command.
A. batch
B. at
C. cron
D. jobs
Show Correct Answer
Correct Answer is :
at
15. We can use the _____ symbol with at command to redirect our output to a specified file.
A. >
B. <
C. >>
D. %
Show Correct Answer
Correct Answer is :
>
16. Which of the following keyword is not supported by at command?
A. now
B. noon
C. tomorrow
D. evening
Show Correct Answer
Correct Answer is :
evening
17. Which one of the following forms used with at command is invalid?
A. at noon
B. at now +2 years
C. at 3:07 + 1 day
D. at morning
Show Correct Answer
Correct Answer is :
at morning
18. We can list the jobs queued using at command by using ____ option.
A. -p
B. -v
C. -l
D. -r
Show Correct Answer
Correct Answer is :
-l
19. To remove a job from the queue, which option is used with at command?
A. -r
B. -l
C. -e
D. -t
Show Correct Answer
Correct Answer is :
-r
20. We cannot find out the name of the program scheduled using at command.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
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