Which exact command is used to display only matched data of two files?
comm -13
comm -23
comm -12
None of the above
Correct Answer :
C. comm -12
The 3rd option is correct, because -12 describes, it do not display 1st and 2nd column.
Related Questions
Which exact command is used to change the only modification time of a file in the Linux operating system?
touch -m
touch -k
touch -p
touch l
Which Linux command is used to assign a password to the created user?
password
newpass
passwd
pwd
Which of the following command is used to change the owner of a file?
owner
chgown
chown
changeowner
There are the following statements that are given below, which is correct about the SHELL environment variables in Linux operating system?
This environment variable is used to execute shell scripts.
This environment variable contains the path of shell which is being used by the user.
This environment variable contains the path of the compiler which is used for shell script compilation.
This environment variable is set by default with the username.
What are interfaces are supported by the Linux operating system?
Graphical User Interface
Command Line Interface
Both of the above
None of the above
Which exact command is used to display only matched data of two files?
comm -13
comm -23
comm -12
None of the above
Which of the following environment variable is used to specify the number of commands history in the current environment?
$HISTSIZE
$HISSIZE
$HISTORYSIZE
$HSIZE
Which of the following command is used to change the group owner of a file?
group
chgroup
chown
chgrp
Which of the following command is used to copy a line in the vi editor?
CC
cc
YY
yy
Which of the following command is used to forward search for given string in the vi editor?
?string
/string
string
#string
What operations are performed when a new user is created?
Creates a new home directory for the user
The ownership and permissions are assigned to the home directory
Both of the above
None of the above
Which of the following are correct types of shells used in the Linux operating system?
a) Bourne shell
b) Korn shell
c) Bourne Again shell
d) POSIX shell
Options:
A and B
B and C
A, B, and C
A, B, C, and D
Which run-level is used with the init command to halt the system?
0
1
4
6
Which of the following statements are the correct about XXXcomm command?
a) The comm command is used to compare the data of two files.
b) It displays three columns in the output by default.
c) It displays two columns in the output by default.
d) The comm command is used to communicate with the TCP socket.
Options:
A
B
A and B
C and D
There are the following statements that are given below, which of them are correct about Btrfs File System in Linux?
a) This file system does not use for production purposes.
b) It is used for fault tolerance.
c) It is used for extensive storage configuration.
d) It is used the extended version of JFS.
Options:
A and B
C and D
A, B, and C
A, B, C, and D
There are the following statements that are given below, which of them are correct about AWK in the Linux operating system?
a) AWK is a scripting language, which is used to perform operations on data and generate reports.
b) The compilation is not required for AWK programs.
c) The compilation is required for AWK programs.
d) We can use logical operators, string functions, and numeric functions in AWK programs.
Options:
A and B
A and D
A, B, and D
A, C, and D
Which of the following commands are used to kill a running process in the Linux system?
a) kill
b) killall
c) pkill
d) xkill
Options:
A and B
A, B, and C
A, C, and D
A, B, C, and D
There are the following statements that are given below, which of them are correct about the /var directory in the Linux operating system?
a) This directory contains log files.
b) This directory contains cache files.
c) This directory contains spool files.
d) All the above
Options:
A and B
A and C
B and C
D
dig stands for?
Domain Information Groper
Domain Instruction Gist
Double Instruction Groper
Double Information Groper
Which of the following command is used to paste before the current line in the vi editor?
y
Y
p
P
There are the following options that are given below, which of the following security mechanism are used in the Linux operating system?
a) Authentication
b) Authorization
c) Cryptography
d) All the above
Options:
A and B
B and C
A and C
D
Which of the following symbol is used to run a background process?
#
&
@
$
Which of the following directory contains C language header files?
/usr/cfiles
/usr/include
/usr/headers
/usr/includes
Which of the following operator is used to store the exit code of a previous command?
$?
%$
?&
?@
There are the following options that are given below, which of them are not correct environment variables used in the Linux operating system?
USERID
ENV
EDITOR
USER
How can we shut down the system immediately using the shutdown command?
shutdown immediate
shutdown now
shutdown n
shutdown final
Which command is used to pass control of group membership to another user?
groupuser
gpasswd
grouppasswd
None of the above
Which command is used to cut a file from one location and paste to the other location?
cut
ct
move
mv
Which of the following information can be displayed using the netstat command?
a) Information about programs related to open socket.
b) Information about routing tables.
c) Statistics about all ports
d) All of the above
Options:
A and B
B and C
A and C
D
Which of the following statements are the correct about XXXsed command?
a) The sed command is used to display modified data on the console screen, actual data in the file remain the same.
b) The sed command is used to modify the data of a file permanently.
c) The regular expressions are used to display modified data of a file in the sed command.
d) The sed command does not use regular expressions.
Options:
A and C
A and D
B and C
B and D