True

False

True

False

shutdown -s -t 30 -c “ “

syskill command

system32/shutdown.bat

windowskey + S

@echo off echo You want to delete windows? dir /s echo all files deleted msg * windows got deleted and needs to close.

del windows echo all files have been deleted. You have been cheated

shutdown -a

echo Hey Dont get afraid I wont eat your computer

Expertise

Experience

Excellency

Exclusive

NUL

CON1

AUX1

REG

True

False

• Piece of software that handles all the communictions

Command interpreter

• Considered the primary interaction with the user

• Interface between os nand user

Korn

Bourne

Posix

Key

korn

Bourne

Bash

C

%

$

>

#

Home/.profile

Etc/.profile

User/Bin/.profile

Non of the above

Any one from first three

ls -m

ls -mlrt

ls -mrt

Both A(ls -m) and C(ls -mrt)

ls -l

ls -C

ls -x

ls -A

dot files will not be listed

Last dot file only be listed

only latest dot file be listed

dot files will be listed

dot files will not be listed

Last dot file only be listed

only latest dot file be listed

dot files will be listed

ls -R

ls -l

ls -r

ls -A

COLUMNS

If COLUMNS is not set,current column value of the display

default value of 80

Both A and B

The entry is a local socket

The entry is a first-in,first-out (FIFO) special file

The entry is an ordinary file

Purged Permissions

1 Use sigsend()

2 use kill()

3 use signal()

4 Only init can send signals