Batch-101

Question 1

What are the types of Commands we have in Batch?

Answer 1

Internal : DIR, COPY, DEL

External: Format, Undelete, Backup

Question 2

Which keyword to use for comment

Answer 2

REM

Question 3

Which command to use forEcho

Answer 3

ECHO

Question 4

How can we made the echo off

Answer 4

ECHO OFF

Question 5

How can we prevent a particular command to still be shown but get executed

Answer 5

USe @ before the keyword

Question 6

How can we pause for user reaction?

Answer 6

Do ECHO Warning: Statement PAUSE

Question 7

What REM command does?

Answer 7

It will delete *.doc file in the folder

Question 8

What does autoexec,bat does?

Answer 8

It gets executed every time the windows starts, it takes data from Path variable and run the commancd accordingly

Question 9

How to capture the param from the command line?

Answer 9

Use %1, %2 and keep the counting with the no of params passed

Question 10

Which command is used to comeout to windows back?

Answer 10

EXIT

Question 11

So java, mongo and the like has batch utility to run and execute?

Answer 11

Exactly

Question 12

What is the command for For Loop

Answer 12

FOR %%A in (items) DO …

Question 13

Can we have %%[0-9] IN (items) DO…

Answer 13

NO only letters

Question 14

What is the syntax for IF

Answer 14

IF [NOT] EXIST (ECHO…)

Question 15

Can we Goto commancd

Answer 15

Yes, IF EXISTS C:/text.txt GOTO ME GOTO END

:ME ECHO ME End

Question 16

Can we use IF back to back

Answer 16

Yes, IF EXIST C:/test.txt IF EXIST C:/ME.txt ECHO BOTH EXISTS

Question 17

What is NULL device

Answer 17

Each directory ahs null exists , which is unreadeable

Question 18

How can you check the existence of a folder?

Answer 18

IF EXIST c:/WINDOWS/nul ECHO Windows folder exists

Question 19

How can we check if a drive is valid?

Answer 19

IF EXIST c:/io.sys

Question 20

How can we compare the Strings?

Answer 20

IF [NOT] string1 == string2 Command

Question 21

What is sysntax for CHOICE?

Answer 21

CHOICE[string][/C:keys][/S][/N][/T:key;secs]
String : That you want display as comment
kEys: The char choices to be given
/S is to make them case insenstive
/N is to show the possible keys in bracket
/T:key;secs: key the o choose by defaultafter the secs (seconds) went out

Question 22

WHAT is CHOICE/C :AN12

Answer 22

The error level for A is 1 and for N it is 2, if 1 is pressed error level 3 and 2 is pressed error level is 4

Question 23

Can we use Errorlevels ?

Answer 23

Yes if command coupled with ErrorLevelis kewl

IF ERRORLEVEL 1 ECHO ….(for all > = 1)

Question 24

What is > &&raquo_space; does ?

Answer 24

One is to write and other is to append

Question 25

What is > NUL?

Answer 25

To suppress the message to nothing

Question 26

What is MORE and TYPE?

Answer 26

Type will shopw all the contents of the file, More will show part by part

Question 27

What is the pipe command?

Answer 27

To feed the output of one command to another

Question 28

Do we have TIME command?

Answer 28

Yes TIME

Question 29

How we can start the folder?

Answer 29

Path START .