who -h is used to
Print column headings
Hide detail.
Hide user name.
All of the above.
Correct Answer :
A. Print column headings
Related Questions
/dev is used for
Executable file
Contains include file
Contain compiler file.
Device file & resource file.
The type of shell mostly used for Linux is
bash
korn
bourne
C-shell
For a user _______ is an autoexec.bat equivalent file in Linux
.bashrc
.bash_rc
.bash_profile
.bashprofile
User passwords are stored in
/etc/password
/root/password
/etc/passwd
/root/passwd
Linux is a
Multi Tasking OS
Multi User OS
Dedicated Server
All of the above
A user is logged in on a terminal; root tries to delete the user. Will the user be deleted?
Yes
No
What is the relation between grep & egrep
egrap is a mother of grep.
Egrap is totally difference
Egrap is a another version of grep.
None of these.
The command for changing the permission relating to files is
ls-l
head
tail
chmod
While installing Linux, users can be created
True
False
The X-Window system in Linux is a
program development environment
graphical user interface
tool to connect Linux with Windows
none of the above
All device files are stored in
/device
/etc/dev
/bin
/dev
wc -l will give the
Number of lines
Number of characters
Number of words
All of the above
Home directory of root is
/home
/bin
/root
/boot
To setup a Firewall, the command is
ntsysv
setup
/etc/firewall
/etc/install
The encrypted password is stored in which field of /etc/password file ?
first
second
third
last
What is the meaning of chmod 444 stuf?
Gives all user write permission.
Gives all user execute permission.
Gives all user read permission.
All of the above.
A swap partition is actually
Primary partition
Extended partition
Extended memory
Virtual memory
To delete an user along with its home directory, the command is
userdel -d username
userdel -D username
userdel -r username
userdel -R username
To check if a service is running, the command is
Ntsysv
setup
/etc/rc.d/init.d/service
/etc/serice
_______ is used to rename files
ren
move
rename
mv
To delete user the command is
rm <username>
delete <username>
userdel <username>
any one of the above
To start graphics mode use
init 3
init 5
init 0
init 6
An user can login without password
True
False
All run levels are stored in
/etc/fstab
/etc/init
/etc/inittab
/etc/rc.d
init 6 is
Shutdown
Restart
Text mode
Graphics mode
The command to check a partition is
fsck
fstab
fdisk
diskdruid
cat > abc, if the requested file does not exist, error will be given by
Kernel
Shell
root
None of the above
Output of the command 'wc <filename>' is
Show only line
Show only word.
Show alphabet, line, word.
Show only file name.
The core of Linux OS is also called
Kernel
Shell
root
bash
-wxrwx-x is equivalent to
567
675
571
672