Unix problems
- 1. 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
Correct Answer: pwd
- 2. 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
Correct Answer: /usr
- 3. 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
Correct Answer: ls -t
- 4. 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
Correct Answer: ^pat
- 5. 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
Correct Answer: shell
- 6. Which command is used to remove the read permission of the file 'note' from both the group and others?
Options- A. chmod go+r note
- B. chmod go+rw note
- C. chmod go-x note
- D. chmod go-r note
- E. None of the above Discuss
Correct Answer: chmod go-r note
- 7. Which column contains all details of the permissions of a file when you issue the ls -l command?
Options- A. second
- B. fourth
- C. third
- D. first
- E. None of the above Discuss
Correct Answer: first
Explanation:
root@server [~]# ls -l .... -rw------- 1 root root 37 Dec 31 2009 .my.cnf -rw------- 1 root root 737 Aug 18 21:20 .mysql_history -rw-r--r-- 1 root root 264 Aug 18 16:51 .pearrc ....
- 8. The command used to compare the files is known as
Options- A. comp
- B. cmp
- C. do
- D. ccp
- E. None of the above Discuss
Correct Answer: cmp
- 9. The % key allows you
Options- A. to move the cursor to a matching delimiter, when a delimiters a parenthesis, a bracket, or a brace.
- B. to move the cursor to the upperleft corner of the screen
- C. to move the cursor backward to the beginning of a word
- D. to move the cursor to the first column in the current line
- E. None of the above Discuss
Correct Answer: to move the cursor to a matching delimiter, when a delimiters a parenthesis, a bracket, or a brace.
- 10. Which command is used to sort the lines of data in a file in alphabetical order?
Options- A. sort
- B. sh
- C. st
- D. sort -r
- E. None of the above Discuss
Correct Answer: sort
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