Which of the following symbol is used to match the empty string at the edge of a word?
\
>
B
Correct Answer :
D.
The backslash b () is used to match the empty string at the edge of a word.
Related Questions
There are the following statements that are given below, which of them are correct system libraries in Linux operating system?
a) System libraries are a special program.
b) We can use kernel functionalities using system libraries.
c) System libraries are user programs.
d) System libraries used system calls.
Options:
A and B
B and C
A, B, and D
A, B, and C
Which of the following character is used to identify the symbolic link file in the output of ls command?
s
c
l
_
Which exact command is used to disable password for a particular user?
usermod -D
usermod -d
usermod -l
usermod -L
Which of the following environment variables contains the path of the user's unique id?
UID
USERID
USRID
ID
Which of the following modes are used to assign permission to the file in the Linux operating system?
Numeric mode
Symbolic mode
Both
None
What is the full form of OFS in AWK?
Object Field Separator
Obsolete Field Separator
Officiated Field Separator
Output Field Separator
There are the following statements that are given below, which of them are correct about Regular expressions in the Linux operating system?
a) The regular expressions are strings that are used for pattern matching in some Linux commands.
b) The regular expressions are also known as a regex.
c) The regular expressions use some characters that each has a different meaning.
d) Regular expressions can only be used in the Linux commands.
Options:
A and B
C and D
A, B, and C
A, B, C, and D
Which command is used to create multiple directories in a single command?
md
mkdir
makedir
mkdirs
There are the following statements that are given below, which of them are the correct about the last command in the Linux system?
a) This command displays the information about the last logged in timing for the user.
b) The last command is used to display the last executed process in the system.
c) This command displays IP address, username, and duration of logging in.
d) The log information is stored in the /var/log/wtmp file.
Options:
A and B
A, B, and C
A, C, and D
A, B, C, and D
What are the basic components of the Linux operating system?
a) Kernel
b) Kernel Modules
c) Shared Libraries
d) User Programs
Options:
A and B
A, B, and C
B, C, and D
A, B, C, and D
Which command is used to compress a file?
zip
gzip
ezip
mzip
What is the default size of MTU in the Linux operating system?
a) cat
b) file
c) help
d) man
Options:
1000
1500
2000
2600
Which of the following directory contains C language header files?
/usr/cfiles
/usr/include
/usr/headers
/usr/includes
Which of the following symbol is used to represent the group of characters?
/
\
+
-
Which exact command is used to list the files and directories along with hidden files?
ls -l
ls -k
ls -a
ls -n
Which Linux command is used to un-mount the external storage devices from the Linux file system?
unmount
umount
nmount
None of the above
Which of the following operator is used to set and override the permission of a file in chmod command?
+
=
*
-
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
Which of the following command is used to move one word forward in the vi editor?
b
ww
w
yw
Which command is used to querying DNS to get mapping information about the domain name and IP address?
netstate
nslookup
netinfo
domainlookup
Which of the following number is used for read permission in the Linux operating system?
4
2
1
0
The scope of an environment variable can be?
Local
Global
Both
None
Which of the following command is used to save and quit from the vi editor?
:q
:Q
:wq
:q!
Which exact command is used to see the permissions of a file in the Linux operating system?
perms
file -perm
ls -l
ls -perm
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
Which of the following command is used to delete scheduled tasks?
atrm
atdl
atdel
rmtask
There are the following statements that are given which of them are correct about Linux commands?
a) In the Linux operating system, a command is an instruction to the system to perform a particular task.
b) Linux commands are case sensitive.
c) All Linux commands are scripts written in python.
d) All of the above
Options:
A and B
A and C
B and C
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 symbol is used to match exactly one character?
$
?
_
+
Which of the following command is not used to extract a compressed file?
untar
tar
gunzip
bunzip2