A. | – 2.65 |
B. | – 2.30 |
C. | 0 |
D. | 1 |
Option: C Explanation : Click on Discuss to view users comments. |
What is the function of following UNIX command ? WC – l b &
A. |
It runs the word count program to count the number of lines in its input, a, writing the result to b, as a foreground process.
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B. |
It runs the word count program to count the number of lines in its input, a, writing the result to b, but does it in the background.
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C. |
It counts the errors during the execution of a process, a, and puts the result in process b.
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D. | It copies the ‘l’ numbers of lines of program from file, a, and stores in file b. |
Option: B Explanation : Click on Discuss to view users comments. |
A. |
The cron daemon is the standard tool for running commands on a pre-determined schedule.
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B. | It starts when the system boots and runs as long as the system is up. |
C. |
Cron reads configuration files that contain list of command lines and the times at which they invoked.
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D. | Crontab for individual users are not stored. |
Option: D Explanation : Click on Discuss to view users comments. |
A. | Only I is correct. |
B. | Only II is correct. |
C. | Both I and II are correct. |
D. | Both I and II are incorrect. |
Option: C Explanation : Click on Discuss to view users comments. |