Linux Essentials

Which is the core of the operating system?

• Shell

• Kernel

• Commands

• Script

Which command is used to display the operating system name

• os

• kernel

• unix

• uname

Command used to count number of character in a file is

• cut

• grep

• wc

• count

pwd command displays

• user password

• present working directory

• none of the mentioned

• password file content

How do you rename file “new” to file “old”?

• mv new old

• move new old

• rn new old

• cp new old

Hidden files are

• Files that cannot be opened by ordinary user for writing

• Permitted for (can be accessed) only super users

• Those whose ‘read’ bit is set to ‘h’

• Files that begin with a ‘.’

User passwords are stored in

• /etc/password

• /etc/passwd

• /root/passwd

• /root/password

To get info about a command we use

• man

• ls

• help

• info

Who is the creator of Linux ?💻

• Linus Torvalds

• Charles Babbage

• Dennis Ritchie

Different versions of Linux OS is called _________

• Kernal

• Shell

• Wildcard

• Distributaries