Which of the following commands are used to know about the current user?
a) who
b) whoami
c) who am i
d) w
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 used to know about the current user.
Related Questions
Which of the following signal is used to PAUSE and STOP the processes?
SIGSTOP
SIGSTP
SIGPAUSE
SIGPS
There are the following statements that are given below, which of them are correct about Wildcards in the Linux operating system?
a) Wildcards are the string patterns that contain some special characters.
b) Wildcards are used to perform actions on one or more file that uses the same pattern.
c) Linux shell used wildcard characters for globbing.
d) All the above
Options:
A and B
A and C
A, B, and C
D
Which of the following environment variables contains the path of the user's unique id?
UID
USERID
USRID
ID
By default, which files store output of the command that executed with nohup utility?
nh.out
nohup.out
nohup.txt
nh.txt
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 Linux command is used to configure a wireless network interface in the Linux operating system?
wirelessconfig
wconfiguration
iwconfig
wwconig
Which of the following option is used for a basic regular expression in the grep command?
-B
-G
-P
-E
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
Which of the following Linux command is used to transfer files to the remote computer?
cp
copy
ssh-copy
scp
There are the following statements that are given below, which of them are correct about /etc/login.defs file in the Linux operating system?
a) In this file, we can define the maximum number of days a password may be used.
b) In this file, we can define the minimum number of days allowed between password changes.
c) In this file, we can also define the minimum and maximum length of the password.
d) There is no /etc/login.defs file exists in the Linux operating system.
Options:
A and B
A and C
A, B and C
D
Which of the following statements are the correct about XXXuniq command?
a) This command is used to delete unique data from a file permanently.
b) This command is used to display a sorted list in which every word will occur only once.
c) We can count the occurrence of a word using uniq command.
d) None of the above
Options:
A and B
A and C
B and C
B and D
Which of the following command is used to configure a public key at the SSH server for a user?
ssh-copy-id
ssh-public-key
ssh-public-id
ssh-copy-key
Which of the following operator is used to set and override the permission of a file in chmod command?
+
=
*
-
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 exact command is used to see the permissions of a file in the Linux operating system?
perms
file -perm
ls -l
ls -perm
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 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
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 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}
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 }'
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 of the following information can be viewed using ifconfig command in the Linux operating system?
a) IP address
b) Mac address
c) MTU
d) All of the above
Options:
A
A and B
A and C
D
Which exact command is used to see the calendar of the year 2020?
cal 2020
cal -y 2020
calendar 2020
None of the above
Which of the following command is used to display the path of a command in the Linux File System?
pcmd
which
pathcmd
None of the above
Which command is used to see what permissions will be provided to the newly created file by default?
default
unmask
permissions
defperm
Which command is used to pass control of group membership to another user?
groupuser
gpasswd
grouppasswd
None of the above
Which of the following command is used to get brief information about Linux commands and functions?
info
incmd
whatis
cmddocs
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
How can we view and add content in the kernel ARP table?
arpmod
arpalter
arptable
arp
There are the following statements that are given below, which is correct about the SHELL environment variables in Linux operating system?
This environment variable is used to execute shell scripts.
This environment variable contains the path of shell which is being used by the user.
This environment variable contains the path of the compiler which is used for shell script compilation.
This environment variable is set by default with the username.