Which of the following commands are built-in shell commands in the Linux operating system?
a) pwd
b) cd
c) export
d) echo
Options:
A and B
C and D
A, B, and C
A, B, C, and D
Correct Answer :
D. A, B, C, and D
All given commands are built-in shell commands.
Related Questions
Which of the following statements are correct about whois command?
We can get name servers of a website using whois command.
The whois command is used to get domain name and registry information for a website.
Both of the above
None of the above
What are interfaces are supported by the Linux operating system?
Graphical User Interface
Command Line Interface
Both of the above
None of the above
The scope of an environment variable can be?
Local
Global
Both
None
Which of the following configuration file is used by updatedb command?
/etc/db.conf
/etc/locatedb.conf
/etc/updatedb.conf
/etc/update.conf
Which of the following command is used to move left in vi editor?
I
h
j
k
Which exact command is used to kill a running process using process id?
killall
kill -9
kill -p
kill -s
There are the following options that are given below, which of them are the correct environment variable used in the Linux operating system?
a) SHELL
b) TERM
c) PATH
d) HOME
Options:
A and B
C and D
A, C, and D
A, B, C, and D
Which of the following command is used to forward search for given string in the vi editor?
?string
/string
string
#string
There are the following statements that are given below, which of them are correct about touch command in Linux?
a) It is used to create empty files.
b) It is used to update the timestamp of the existing file.
c) It is used to write formatted data into the file.
d) It is used to view the content of the file.
Options:
A and B
B and C
A, B, and C
A, B, C, and D
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 operator is used to set and override the permission of a file in chmod command?
+
=
*
-
How to check the version of the ls command?
ls -v
ls --v
ls -version
ls --version
Which of the following Linux command is used to remove the value of an environment variable?
removeenv
remove
unset
delete
Which of the following command is used to print pending tasks?
ptasks
atq
qtasks
atrm
Which of the following command is used to view the content of the compressed file?
cat
gzip
zcat
zipcat
Which of the following command is used to replace the specific word, for example we want to replace inclusion by exclusion?
echo inclusion | sed 's/in/ex'
echo inclusion | sed 's/ex/in'
echo inclusion | sed 'r/in/ex'
echo inclusion | sed 'R/in/ex'
Why the double ampersands are used in a regular expression?
The double ampersands (&&) are used in regular expression for deleting the specified string.
The double ampersands (&&) are used in regular expression for replacing the specified string.
The double ampersands (&&) are used in regular expression for searching the specified string.
None of the above
Which of the following commands are used to view the content of file screen wise?
a) more
b) less
c) cat
d) tac
Options:
A and B
C and D
A and C
B and C
Which of the following commands are used to create files in the Linux Operating System?
a) cat
b) echo
c) touch
d) printf
Options:
A and B
C and D
A, B, and C
A, B, C, and D
Which of the following operator is used to comment lines in a shell script file?
//
\
/**/
#
Which of the following command is used to delete the character before cursor in the vi editor?
X
x
D
d
In the cut command, a delimiter can be?
a) Hyphen
b) Space
c) Slash
d) All of the above
Options:
A
B
C
D
What is the default UID of root user in the Linux operating system?
0
1
2
3
Which symbol is used with the environment variable name?
#
@
&
$
The Linux Kernel is used to?
Manage hardware components
Execute user programs
Save database files
All of the above
Which of the following command is used to display the list of available groups in the system?
listgroup
list
getent
groups
Which of the following commands is used to create a new user in the Linux operating system?
createuser
adduser
useradd
user
Which command is used to print file content in reverse order line wise, it means, the last line will print first and then print the second last line and so on?
reverse
tac
cat
gedit
There are the following options that are given below, which of them are correct Linux distributions?
a) Red Hat
b) Ubuntu
c) Arch Linux
d) Fedora
Options:
A and B
A and D
B and D
A, B, C, and D
There are the following statements that are given below which of them are correct about the host command in the Linux operating system?
This command is used to display domain name for specified IP address.
This command is used to display an IP address for the specified domain name.
Both of the above
None of the above