Which of the following symbol is used to match the empty string if it is not at the edge of a word?
\
>
B
E
Correct Answer :
D. E
The backslash B (B) is used to match the empty string if it is not at the edge of a word.
Related Questions
In which year vi editor was developed?
1976
1980
1982
1988
There are the following statements that are given below, which of them are correct about bang bang command in the Linux operating system?
The bang bang command is used to remove commands history.
The bang bang command is used to remove execute last executed command.
The bang bang command is used to display the last login time of the current user.
None of the above
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 command is used to see what permissions will be provided to the newly created file by default?
default
unmask
permissions
defperm
There are the following statements that are given below, which of them are correct about vi the editor?
a) The vi editor is also known as a Visual editor.
b) The vi editor is used to create and edit text files.
c) It is a very user-friendly editor and works on different distributions of Linux.
d) vim is the improved version of the vi editor.
Options:
A and B
C and D
A, B, and C
A, B, C, and D
Which exact command is used to list the files and directories along with hidden files?
ls -l
ls -k
ls -a
ls -n
Which of the following directory contains interrupts related files?
/proc
/dev
/var
/home
Suppose that a text file abc.txt that contains multiple lines, then how to print all complete lines with line numbers using AWK?
awk '{print NS,$1}' abc.txt
awk '{print NR,$0}' abc.txt
awk '{print NR,$1}' abc.txt
awk '{print NS,$1}' abc.txt
There are the following statements that are given below which of them are correct about piping in the Linux operating system?
a) The piping the process which is used to redirect the output of one command to another command as an input.
b) We use the pipe (|) operator to perform piping.
c) The piping is not supported in Linux; it works only in the UNIX operating system.
d) None of the above
Options:
Only A
Only B
A and B
A and C
There are the following statements that are given below which of them are correct about the ss command in the Linux operating system?
a) The ss command is the replacement for the netstat command.
b) It is faster than the netstat command.
c) We can display all UDP and TCP socket connections using ss command.
d) The ss can display all TCP socket connections only.
Options:
A and B
A and C
A, B, and C
A, B, and D
Which of the following signal is used to PAUSE and STOP the processes?
SIGSTOP
SIGSTP
SIGPAUSE
SIGPS
Which of the following Linux distribution does not follow the File Hierarchy System?
a) Ubuntu
b) GoboLinux
c) NixOS
d) Redhat
Options:
A and B
A and C
B and C
B and D
Which exact command is used to kill a running process using process id?
killall
kill -9
kill -p
kill -s
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
Which Linux command is used to display information regarding file systems about the total space and free space?
file
info
df
ds
Which exact command is used to see the calendar of the year 2020?
cal 2020
cal -y 2020
calendar 2020
None of the above
Which exact command is used to change from the current directory to the previous directory?
cd ..
cd ~
cd -
cd .
Which exact command is used to find files whose permissions are 765 in the current directory?
find . -perm 765
find . -per 765
find . -p 765
find . -prm 765
There are the following statements that are given below, which of them is correct about Linux kernel?
The kernel is the main part of the Linux root file system.
The kernel is a core part of OS, which acts as a bridge between hardware and user programs.
The kernel is one kind of shell used by system calls.
None of the above
Which of the following symbol is used to run a background process?
#
&
@
$
Suppose that a text file abc.txt that contains multiple lines, some of the line contains word school. Then how to print only those line who contains school using AWK?
awk '/school/ {print}' abc.txt
awk -check '/school/ {print}' abc.txt
awk -check '/school/ ' abc.txt
None of the above
How to change the normal user to root user using the terminal in the Linux operating system?
Using sudo command
Using su command
Using super command
None of the above
How can we shut down the system immediately using the shutdown command?
shutdown immediate
shutdown now
shutdown n
shutdown final
How to print lines of a given text file from line number 2 to 4 using AWK?
awk 'NR==2, NR==4 {print NR,$0}'
awk 'NR==2 to NR==4 {print NR,$0}'
awk 'NR==2-4 {print NR,$0}'
awk 'NR==2,4 {print NR,$0}'
There are the following statements that are given below, which of them are correct about Wildcards in the Linux operating system?
a) Wildcards are the string patterns that contain some special characters.
b) Wildcards are used to perform actions on one or more file that uses the same pattern.
c) Linux shell used wildcard characters for globbing.
d) All the above
Options:
A and B
A and C
A, B, and C
D
Which of the following command is used to repeat the last command in the vi editor?
Dot (.)
!
@
$
The /opt directory comes in which category of directories?
Binary directories
Data directories
Variable directories
Memory directories
Which of the following commands are used to know about the current user?
a) who
b) whoami
c) who am i
d) w
Options:
A and B
C and D
A, B, and C
A, B, C, and D
Which of the following environment variable is used to specify the number of commands history in the current environment?
$HISTSIZE
$HISSIZE
$HISTORYSIZE
$HSIZE
Which exact command is used to remove a directory with its sub-directories?
rmdir -a
rmdir -p
rmdir -s
rmdir -k