Which Linux command is used to un-mount the external storage devices from the Linux file system?
unmount
umount
nmount
None of the above
Correct Answer :
B. umount
The umount command is used to un-mount the external storage devices from the Linux file system.
Related Questions
Which of the following command is used to delete the character before cursor in the vi editor?
X
x
D
d
Which command is used to cut a file from one location and paste to the other location?
cut
ct
move
mv
Which of the following command is used to print the 3rd column of a specified file?
awk '{print $3}
awk '{print $2}
awk '{print $N2}
awk '{print $N3}
There are the following statements that are given below, which of them are correct about the /sys directory in the Linux operating system?
a) The /sys directory contains kernel related information.
b) The /sys directory contains information about hardware devices.
c) The /sys directory contains user-related information.
d) All the above
Options:
A and B
A and C
B and C
B and D
Which directory contains grub configuration file?
/lib
/usr
/boot
/etc
Which of the following command is used to copy a line in the vi editor?
CC
cc
YY
yy
Which command is used to rename the existing group?
rename
rengroup
groupmode
groupmod
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
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 mode(s) are used in the vi editor?
Insert mode
Command mode
Both of the above
None of the above
Which of the following directories that contain the shared libraries in the Linux System?
/sbin
/lib
/bin
/opt
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 exact command is used to show information about specified interface?
ip show
ip a show
ip b show
ip
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
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 command is used to remove a file?
remove
rm
rmfile
delete
Which of the following symbol is used to match exactly one character?
$
?
_
+
Which of the following Linux command is used to set values in environment variables?
setval
setenv
export
env
Which run-level is used with the init command to halt the system?
0
1
4
6
Which command is used to remove an existing group?
removegroup
deletegroup
groupdel
grouprmv
Which of the following notations are correct for owners of a file?
a) a
b) o
c) u
d) g
Options:
A and B
A, B, and C
A, B, and D
A, B, C, and D
What is the default UID of root user in the Linux operating system?
0
1
2
3
Which of the following command is used to forward search for given string in the vi editor?
?string
/string
string
#string
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 exact command is used to multiply 4 by 2 using expr in the Linux System?
expr 4 * 2
expr 4 /* 2
expr 4 * 2
expr 4 ^* 2
Which exact command is used to create a user with a specified name for the home directory, here we will create a user with user1 name and name of the home directory will be MyHome?
useradd -m /MyHome user1
useradd -m -d /MyHome user1
useradd -m -h /MyHome user1
useraddhome /MyHome user1
Which of the following terminal command is used to send an email?
electronicmail
mailcmd
There are the following statements that are given below, which of them are correct about files in Linux?
a) The file can be a text, image, audio, and video file.
b) A device is also represented as a file in the Linux operating system.
c) A directory is also a file.
d) Disk partitions are also represented as a file.
Options:
A and B
A and C
A, B, C, and D
B, C, and D
There are the following statements that are given below which of them are correct about traceroute in the Linux operating system?
a) It is a network troubleshooting command which is used to trace the number of hops is required for packets to reach the destination.
b) This command requires root privileges.
c) By default, it is not installed in the Linux system
d) All of the above
Options:
A and B
B and C
A and C
D
Which of the following command is used to move up in the vi editor?
I
h
j
k