Linux Objective Type Questions and Answers | Linux Short Questions & Answers

Questions
21 Which command is used to extract intermediate result in a pipeline
A tee
B extract
C exec
D none of the above

Answer: Option [A]
22 Which command is used to extract a column from a text file
A paste
B get
C cut
D tar

Answer: Option [C]
23 Which command is used to display disk consumption of a specific directory
A du
B ds
C dd
D dds

Answer: Option [A]
24 Which command is used to perform backup in unix?
A backup
B cpio
C zip
D gzip

Answer: Option [B]
25 Which command creates an empty file if file does not exist?
A cat
B touch
C ed
D read

Answer: Option [B]
26 Which option of rm command is used to remove a directory with all its subdirectories
A –b
B –o
C –p
D –r

Answer: Option [D]
27 Which command is used to identify file type?
A Type
B File
C Finfo
D Info

Answer: Option [B]
28 Command used to determine the path of an executable file is
A which
B where
C wexec
D what

Answer: Option [A]
29 Command used to count number of character in a file is
A grep
B wc
C count
D cut

Answer: Option [B]
30 Which of these commands could you use to show one page of output at a time?
A less
B sed
C pause
D grep

Answer: Option [A]
31 Which commands will give you information about how much disk space each file in the current directory uses?
A ls -l
B ls -la
C du
D ls -a

Answer: Option [C]
32 Which of the following command output contains userid?
A ls
B help
C date
D ls –l

Answer: Option [D]
33 Which command is used to display all the files including hidden files in your current and its subdirectories ?
A ls –aR
B ls –a
C ls –R
D ls –l

Answer: Option [A]
34 Which of the following commands can be used to copy files across systems?
A ssh
B telnet
C rsh
D ftp

Answer: Option [D]
35 pwd command displays
A user password
B password file content
C present working directory
D none of the mentioned

Answer: Option [C]
36 Which of the following commands can be used to change default permissions for files and directories at the time of creation
A Chmod
B Chown
C Umask
D Chgrp

Answer: Option [C]
37 Which tar command option is used to list the files in a tape archive format?
A cvf
B tvf
C xvf
D ovf

Answer: Option [B]
38 Which of the following commands will allow the user to search contents of a file for a particular pattern
A touch
B grep
C find
D ls

Answer: Option [B]
39 Write the command to display the current date in the form dd/mm/yyyy.
A date +%d/%m/%Y
B date +”%d/%m/%Y”
C date +/%d/%m/20%y
D date +”/%d/%m/20%y”

Answer: Option [A]
40 The command syntax to display the file ‘sample.txt’ one page at a time is
A man sample.txt>more
B cat sample.txt
C cat sample.txt|more
D None of the above

Answer: Option [C]