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
Correct Answer :
C. A, C, and D
Statements A, C, and D are correct about last command in the Linux system.
Related Questions
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
Which exact command is used to list the files and directories with the size of the file or directory?
ls -l
ls -s
ls -k
ls -h
Which of the following redirection operator is used to append the content in a file?
>
<
>>
<>
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 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
Which of the following command is used to move to the last line in the file?
G
K
Dot (.)
``
Which of the following commands are external commands in the Linux operating system?
a) cat
b) file
c) help
d) man
Options:
A and B
C and D
A, B, and D
A, B, C, and D
Which exact command is used to remove a directory with its sub-directories?
rmdir -a
rmdir -p
rmdir -s
rmdir -k
How can we view and add content in the kernel ARP table?
arpmod
arpalter
arptable
arp
Which of the following command is used to update the database used by the locate command?
updatelocate
updatelocatedb
locatedb
updatedb
There are the following statements that are given below, which of them are the correct about the uptime command in the Linux system?
a) We can get the current system time using uptime command.
b) We can get the number of users logged in, using uptime command.
c) This command also displays CPU load average.
d) This command also displays the duration for which the computer has been running.
Options:
A and B
B and D
A, B, and D
A, B, C, and D
Which command is used to know information about a password?
change
knowpass
passinf
info
Which of the following directories contains configuration files?
a) /opt
b) /var
c) /boot
d) /etc
Options:
A and B
C and D
A, B, and D
A, B, C, and D
Which command is used to querying DNS to get mapping information about the domain name and IP address?
netstate
nslookup
netinfo
domainlookup
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 correct responsibilities of the kernel?
a) Device management
b) Memory management
c) Creation of user programs
d) Process management
Options:
A and B
A and C
A, B, and C
A, B, and D
Which exact command is used to print lines of the file that are not matching to the specific word?
grep -v
grep -i
grep -k
grep -n
Which of the following keyword is used to specify the time of 4pm in at command for scheduling tasks?
breaktime
freetime
midnight
teatime
Which of the following option is used to search a file with inode number using find command?
-inode
-inum
-inod
-in
Which of the following types of arguments or operators are supported by expr command?
a) Plus '+' operator
b) Modulus operator
c) Regular expressions
d) Set of characters in the string
Options:
A and C
A and B
A, B, and C
A, B, C, and D
Which of the following symbols are used for a regular expression in the Linux?
a) $
b) ?
c) _
d) +
Options:
A and B
A, B, 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 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
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
dig stands for?
Domain Information Groper
Domain Instruction Gist
Double Instruction Groper
Double Information Groper
Which of the following option is used for a basic regular expression in the grep command?
-B
-G
-P
-E
Which of the following command is used to rename the file names that contain text with txt in the current directory?
rename 'r/txt/text' *
rename 'e/text/txt' *
rename 's/txt/text' *
rename 's/text/txt' *
Which of the following command is used to check a Linux command is a built-in shell command or external command?
cmdtype
type
ctype
commandtype
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
There are the following statements that are given below, which of them are correct about Linux shell?
a) Linux shell is a part of Linux kernel.
b) Linux shell provides an environment to execute commands.
c) Linux shell is used to execute scripts.
d) Linux shell is used to operate GPIO pins in the kernel.
Options:
A and B
B and C
A, B, and C
A, B, C, and D
Which of the following operator is used to store the exit code of a previous command?
$?
%$
?&
?@