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- Question
Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3?
Options- A. chmod u+x emp[1-3]
- B. chmod 777 emp*
- C. chmod u+r ??? emp
- D. chmod 222 emp?
- E. None of the above
- Correct Answer
- chmod u+x emp[1-3]
- 1. Which command is used to display the top of the file?
Options- A. cat
- B. head
- C. more
- D. grep
- E. None of the above Discuss
- 2. Which of the following keys is used to replace a single character with new text?
Options- A. S
- B. s
- C. r
- D. C
- E. None of the above Discuss
- 3. Which of the following files will displayed by this command cat *ch*
Options- A. patch
- B. catch
- C. .ch
- D. All of the above
- E. None of the above Discuss
- 4. The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is
Options- A. tee
- B. tr
- C. sort
- D. grep
- E. None of the above Discuss
- 5. Which symbol is used to separate more than one command in the same command line?
Options- A. $
- B. #
- C. :
- D. ;
- E. None of the above Discuss
- 6. Which of the following commands is used to display your working directory?
Options- A. dir
- B. prompt $p$g
- C. pwd
- D. path
- E. None of the above Discuss
- 7. Which of the following directories contain all the Alias created by a user, including his login directory?
Options- A. /tmp
- B. /etc
- C. /usr
- D. /dev
- E. None of the above Discuss
- 8. Which of the following commands is used to obtain a list of all files by modification time?
Options- A. ls -1
- B. ls -t
- C. ls -i
- D. ls -R
- E. None of the above Discuss
- 9. Which symbol will be used with grep command to match the pattern pat at the beginning of a line?
Options- A. ^pat
- B. $pat
- C. pat$
- D. pat^
- E. None of the above Discuss
- 10. The agency that sits between the user and the UNIX system is called the
Options- A. logic
- B. profile
- C. shell
- D. erxc
- E. None of the above Discuss
Unix problems
Search Results
Correct Answer: head
Explanation:
The head command displays the first few lines at the top of a file. It can be useful when you want a quick peek at a large file, as an alternative to opening the file.
Correct Answer: s
Correct Answer: All of the above
Correct Answer: tee
Explanation:
The tee command reads standard input, then writes its content to standard output and simultaneously copies it into the specified file(s) or variables.
Correct Answer: ;
Correct Answer: pwd
Correct Answer: /usr
Correct Answer: ls -t
Correct Answer: ^pat
Correct Answer: shell
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