Discussion
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- Question
Which of the following commands is used to update access and modification times of a file?
Options- A. grep
- B. wc
- C. touch
- D. cat
- E. None of the above
- Correct Answer
- touch
- 1. In vi editor, forward search is performed using the command.
Options- A. :pat
- B. ?pat
- C. /pat
- D. All of the above
- E. None of the above Discuss
- 2. Which of the following commands is used to identify the type of file by context?
Options- A. ls
- B. cat
- C. file
- D. more
- E. None of the above Discuss
- 3. Which of the following special shell variables is used to process number of the last background job?
Options- A. $!
- B. $#
- C. $0
- D. $*
- E. None of the above Discuss
- 4. The second set of the three permissions (r-) indicates that
Options- A. group has read permission only
- B. other has read permission only
- C. owner has read permission only
- D. group has write permission only
- E. None of the above Discuss
- 5. Which command is used to display a file contents in octal form?
Options- A. cd
- B. od
- C. of
- D. oct
- E. None of the above Discuss
- 6. Which option will be used with touch command to change the access time?
Options- A. -a
- B. -b
- C. -t
- D. -h
- E. None of the above Discuss
- 7. Which of the following command addresses all users who are currently hooked on?
Options- A. write
- B. mail
- C. wall
- D. mesg
- E. None of the above Discuss
- 8. Which command is used to count just the number of characters in a file?
Options- A. wc - 1
- B. wc -c
- C. wc -w
- D. wc -r
- E. None of the above Discuss
- 9. Which command is used to extract specific columns from the file?
Options- A. cat
- B. cut
- C. grep
- D. paste
- E. None of the above Discuss
- 10. The field separator in cut command is specified with
Options- A. -a option
- B. -d option
- C. -r option
- D. -x option
- E. None of the above Discuss
Unix problems
Search Results
Correct Answer: /pat
Correct Answer: file
Correct Answer: $!
Correct Answer: group has read permission only
Correct Answer: od
Correct Answer: -a
Correct Answer: wall
Correct Answer: wc -c
Correct Answer: cut
Correct Answer: -d option
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