Which of the following command is used to perform mathematical expression and print output on the terminal?
expr
exp
calexp
calexpr
Correct Answer :
A. expr
The expr command is used to perform mathematical expression and print output on the terminal.
Related Questions
The /opt directory comes in which category of directories?
Binary directories
Data directories
Variable directories
Memory directories
There are the following options that are given below, which of them are correct signals used in the Linux?
a) SIGINT
b) SIGHUP
c) SIGQUIT
d) SIGKILL
Options:
A and B
A, B, and C
A, C, and D
A, B, C, and D
Which of the following command is used to enable the shell expansion?
shell +x
shell -x
set -x
set +
Which of the following command is used to perform mathematical expression and print output on the terminal?
expr
exp
calexp
calexpr
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 of the following environment variables contains the path of the user's unique id?
UID
USERID
USRID
ID
Which command is used to remove a file?
remove
rm
rmfile
delete
There are the following statements that are given below, which of them is correct about Linux kernel?
The kernel is the main part of the Linux root file system.
The kernel is a core part of OS, which acts as a bridge between hardware and user programs.
The kernel is one kind of shell used by system calls.
None of the above
Which of the following type of permissions are used for files and directories in the Linux Operating System?
a) Read
b) Write
c) Execute
d) All of the above
Options:
A and B
B and C
A and C
D
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
Which command is used to pass control of group membership to another user?
groupuser
gpasswd
grouppasswd
None of the above
How can we view and add content in the kernel ARP table?
arpmod
arpalter
arptable
arp
Which command is used to copy a file from one location to another location?
copy
copyfile
cp
None of the above
What is the full form of ORS in AWK?
Output Record Separator
Output Record Symbol
Output Resumed Symbol
Object Record Separator
Which command is used to rename the existing group?
rename
rengroup
groupmode
groupmod
How to print non-empty line from the given file using AWK?
awk 'NF > 0'
awk 'NF'
awk 'NE > 0'
awk 'NE'
There are the following options that are given below, which is not a correct Linux distribution?
CentOS
Linux mint
SunOS
OpenSUSE
In which year vi editor was developed?
1976
1980
1982
1988
Which of the following command is used to get brief information about Linux commands and functions?
info
incmd
whatis
cmddocs
Which of the following command is used to extract text from binary or executable files in the Linux operating system?
strings
string
str
strbin
Which of the following configuration file is used by updatedb command?
/etc/db.conf
/etc/locatedb.conf
/etc/updatedb.conf
/etc/update.conf
Which of the following command is used to remove an existing alias?
rmalias
unalias
delalias
ralials
What is the full form of OFS in AWK?
Object Field Separator
Obsolete Field Separator
Officiated Field Separator
Output Field Separator
Which command is used to read data from the standard input device and write to the standard output and one or more files?
tea
tei
tie
tee
What is the range of UIDs is reserved for groups and system accounts?
1-50
51-100
100-999
1000-9999
Which run-level is used with the init command to reboot the system?
0
1
4
6
How to check the version of the ls command?
ls -v
ls --v
ls -version
ls --version
Which of the following command is used to undo the last command in the vi editor?
uu
x
X
u
Which of the following is not a data directory?
/mnt
/root
/home
/proc
There are the following statements that are given below, which of them are correct about the id command in the Linux operating system?
a) This command describes the user id.
b) This command describes the group id.
c) This command describes the list of groups belongs to the user.
d) All the above
Options:
A and B
A and C
B and C
D