Unix problems
- 1. Which of the following commands can be used to get information about all users who are currently logged into the system?
Options- A. which
- B. who
- C. who am i
- D. 1 /u
- E. None of the above Discuss
Correct Answer: who
- 2. Which option is used with the chmod command recursively to all files and sub-directories in a directory?
Options- A. -1
- B. -i
- C. -x
- D. -R
- E. None of the above Discuss
Correct Answer: -R
- 3. The command to count the number of files in the current directory by using pipes, is
Options- A. ls | wc
- B. ls -l | wc -l
- C. ls | wc -w
- D. ls | ws -c
- E. None of the above Discuss
Correct Answer: ls | wc -w
- 4. Which shell's wild-cards is used to match a single character?
Options- A. *
- B. ?
- C. [ijk]
- D. [!ijk]
- E. None of the above Discuss
Correct Answer: ?
- 5. Which command is used to list out all the hidden files along with the other files?
Options- A. ls -l
- B. ls -x
- C. ls -F
- D. ls -a
- E. None of the above Discuss
Correct Answer: ls -a
- 6. Which of the following files contains information related to password aging?
Options- A. Shadow
- B. password
- C. profile
- D. All the three
- E. None of the above Discuss
Correct Answer: password
- 7. Which of the following commands is used to change the working directory?
Options- A. cd
- B. changedir
- C. chdir
- D. cdir
- E. None of the above Discuss
Correct Answer: cd
- 8. Which command is used to change directory to the name beginning with a 'p'?
Options- A. cd p
- B. cd p?
- C. cd p*
- D. cd [p]
- E. None of the above Discuss
Correct Answer: cd p*
- 9. In Bourne shell, which file sets the Unix environment for the user when the logs into his HOME directory.
Options- A. .exrc
- B. .profile
- C. lastlogin
- D. .mbox
- E. None of the above Discuss
Correct Answer: .profile
- 10. The chmod ugo+rw note command can be represented in octal notation as
Options- A. chmod 555 note
- B. chmod 666 note
- C. chmod 444 note
- D. chmod 333 note
- E. None of the above Discuss
Correct Answer: chmod 666 note
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