Which command is used to enable/disable password for a particular user?
usermod
userenable
userdisable
change
Correct Answer :
A. usermod
The usermod command is used to enable and disable password for a particular user.
Related Questions
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 keyword is used to specify the time of 4pm in at command for scheduling tasks?
breaktime
freetime
midnight
teatime
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
There are the following statements that are given below, which of them are correct about environment variables in Linux operating system?
a) The environment variables are used to store some values that can be used by the application.
b) The environment variables are used to customize the behavior of the applications.
c) The environment variables can impact the performance of the system.
d) The environment variable used a % symbol for variables.
Options:
A and B
C and D
A, B, and C
B, C, and D
There are the following commands that are given, which of them are correct about the nohup command in the Linux system?
a) The nohup stands for No Hang-up.
b) The nohup stands for Notify Hang-up.
c) The nohup command is used to keeps the processes running, even the terminal gets close by the user.
d) This command is used to prevent the processes from the SIGHUP signals.
Options:
A and C
B and C
B, C, and D
A, C, and D
Which of the following is known as match operator in AWK?
=
!
~
==
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
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 the scripts related to service used in the Linux operating system?
/etc/services/
/etc/scripts/
/etc/init.d/
/etc/services/scripts/
A Linux operating system supports?
a) Multitasking
b) Multiprogramming
c) Multiuser
d) Multithreading
Options:
A and C
A, C and D
A, B, and C
A, B, C, and D
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 option is used in the regular expression to remove a complete line from the output of a file using sed command?
a) zcat
b) zmore
c) zless
d) zgip
Options:
d
del
delete
rem
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 tracepath command in the Linux operating system?
a) It is also used for network troubleshooting.
b) This command requires root privileges.
c) By default, it is installed in the Linux system
d) All of the above
Options:
A and B
B and C
A and C
D
Which exact command is used to change the size of MTU?
ifconfig
ifconfig mtu
ifconfig mtu
ifconfig
Which exact command is used to remove a directory with its sub-directories?
rmdir -a
rmdir -p
rmdir -s
rmdir -k
Which command is used to cut a file from one location and paste to the other location?
cut
ct
move
mv
Who was developed the vi editor?
Bill joy
James gosling
Andy Bechtolseim
Scott G. McNealy
Which of the following commands are used to switch from command mode to insert mode in the vi editor?
a) i
b) a
c) o
d) O
Options
A and B
A and C
A, C, and D
A, B, C, and D
Which directory contains grub configuration file?
/lib
/usr
/boot
/etc
There are the following statements that are given below, which of them are correct about the Linux File System?
a) File System is a layer in the Linux operating system, which is used to control the management of storage data.
b) It provides the arrangement of files in the disk storage.
c) It is used to manage information about files like name, size, creation, and modification time.
d) Linux File System is the software that runs only on Intel architecture.
Options:
A and B
C and D
A, B, and C
A, B, C, and D
Which of the following statements are the correct about XXXsort command?
a) This command is used to sort the content of a file in alphabetical order.
b) This command is used to sort the content of a file based on the column.
c) This command is used for numeric sorting bases on the column.
d) None of the Above.
Options:
A and B
A and C
A, B, and C
D
How to check the version of the ls command?
ls -v
ls --v
ls -version
ls --version
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
There are the following statements are given below, which of them are the correct about the ps command in the Linux system?
a) This command is used to display information about processes running in the system.
b) This command displays the memory occupied by a system call.
c) This command displays the process id of the running processes.
d) This command displays the name of the running processes.
Options:
A and B
A, B, and C
A, C, and D
A, B, C, and D
Which exact command is used to down interface eth0 in the Linux operating system?
ifconfig down eth0
ifdown eth0
down eth0
ifconfig -d eth0
Which of the following command is used to print the number of lines that exist in the specified file?
awk 'END { print NL }'
awk 'END { print N }'
awk 'END { print NR }'
awk 'END { print NN }'
How can we differentiate between file and directory from the output of ls command?
Directories are mentioned in capital letters in the output of ls command.
The d character is used before permissions in the output of ls command.
Both of the above
None of the above
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