Instructables

Batch Tutorial - Take 1

Well i have seen a few batch tutorials out there, but none of them really follow up with anything so I'm making a 3 part tutorial on batch, with videos just for that extra ease.

I will attach all .bat (batch) files needed in their appropriate
step.



 
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Step 1: Hello World!

To start of to open the Command Prompt just click "Start => Run and type 'cmd'"

Basically to start off with you should open notepad and type:
@echo off
What this does is essentially block the command from showing while still showing the output.
Now with batch files there are various ways to "communicate".
For example:
@echo offecho hello worldmsg * hello worldnet send * hello world
Go ahead and write that into notepad and save it as com.bat. Then double click to start.
We will be using all of them except echo as it is pretty self-explanatory.
com.bat71 bytes

Step 2: A little more "tricky"

Okay now we get into a little more complicated, we'll not really. :D

Start off with a blank notepad document and type this:
@echo offshutdown -spauseshutdown -amsg * tricked you!! haha
Now shutdown basically just shutdowns the computer. Look at the video for a more in detail look or type shutdown -? into cmd.

pause basically waits for you to press ANY KEY to continue.

And you know what msg does from the previous step..

Try this out by saving it as tricky.bat.
tricky.bat70 bytes

Step 3: Fork Bombs / Infinite Loop (the GOTO trap)

Basically all a fork bomb is, is a program that keeps opening copies of itself which open up copies of itself, and so on and so forth. Well a VERY basic fork bomb would be:
@echo off:Startstart fork.batGOTO Start
Save as fork.bat
:Start marks a place in the script to which you may want to GOTO later or quicker then planned.
GOTO tells the program to go to a specific part

start basically "starts" something it can be a webpage, anything.
eg, start http://instructables.com''

This GOTO trap last forever until the user either breaks the process of the computer crashes.
The start fork.bat can be replaced with any command you like, for example;
@echo off:Startnet send * laconix rules!GOTO Start
Which basically send the text "laconix rules!" to anyone on your network with the Messenger Service running.
fork.bat45 bytes

Step 4: Have fun...

Hope your eager for the next tutorial, i know i am!

Go an hone you newly learnt skill and have phun!
persnol7 months ago
type *MSG

and anyone does good ascii art?message me
it keeps telling somthing about msg not being a command
Ca$hews2 years ago
Controlled Fork-Cloner

@echo off

cls

:a

echo Clone Me. Push a key.

pause>nul

start Lolcloner.cmd

goto a

This batch program only clones itself when you push a key.
Brian Wall2 years ago
you can easily make a trojan with one line
gflorin2 years ago
@echo off
title Folder Creator
:menu
cls
echo Welcome!
echo -------------------------------------------------------------------------------------
echo.
echo 1) Create a new folder
echo 2) Exit
echo.
echo -------------------------------------------------------------------------------------
echo.
set/p nbr=Type the action number you want to do:
if %nbr%==1 GOTO new
if %nbr%==2 exit
:new
cls
echo New Folder
echo -------------------------------------------------------------------------------------
echo.
set/p nm=Folder Name:
md "%nm%"
if exist %nm% (
msg * "Folder successfully created!"
) else (
msg * "An error was found! '%nm%' was not created!"
)
GOTO menu
:: end

Save it as .bat
redmaker4 years ago
wow it say you computer will shutdown in less than i minute
I tried myself and it really shutdown your pc
aceman 5696 years ago
umm..., sorry for asking, ..but...what do batch files do, exactly?
Ribs aceman 5696 years ago
asking the same here. what are they?
there for viruses and other hacking tools
A batch file is a file that is mainly constructed for executing a command in command prompt, or creating cool tricks. Not for "hacking" or "viruses." I'de like to see someone take down Google with a batch file if that was the case..
gflorin Files2 years ago
Every site can be taken down using batch files, but I'm gonna let you guess how...
These files are NOT made for hacking and they are NOT viruses! You CAN'T make something like a "TROJAN" with a poor batch file! They are made for creating simple and HELPFUL programs. Think for a second: 1. Professional hackers spend months or maybe years to make a virus and you are making a virus in 5 minutes using just 5-10 lines? 2. If these were viruses, your AntiVirus should say "DING!!" 3. The .bat extension is created by the Microsoft Corporation. 4. Microsoft Corporation is AGAINST VIRUSES/HACKERS/CRACKERS and they are trying to protect people's computers NOT TO DESTROY THEM! 5. If you get in trouble because of the batch files you made, this is not because this is the only way that they should be used, but because u used them in the wrong way!
and please, please stop calling it hacking. what you are thinking of is "cracking", something done by script kiddies. hacking is a state of mind, not an action. its about the pursuit of knowledge, not stealing peoples things.
sorry, i had to get that out
-Blake Gambel

lol no there not.
a batch file is pretty much an automated list of commands for command prompt
*sigh* if you don't know what you are talking about then shut up!

batch files are used to execute things they are used for logon scripts, simple tasks(renaming lots of files and stuf)
you can also make games like <br/>the instructable below is great!:P<br/><a href="http://www.instructables.com/id/Batch-Files-Some-basics...../">http://www.instructables.com/id/Batch-Files-Some-basics...../</a> <br/>
Excuse me thermitekonga, but your ignorance urges me to take your compy and shove in your reproductive oraphice. In short, STFU, as you do not realize what they really are.
inevitable_chaos (author)  aceman 5696 years ago
Basically all a batch file does is execute all the commands you type in, in that order. Many network administrators (and normal people xD ) use either batch files or visual basic scripts (.vbs) to do repetitive tasks and for logon scripts. To sum up; in the cmd prompt the commands you type in are the same as in a batch file, just in a batch file you type all the commands out before hand not in realtime.
So it dosent actualy do anything? for instance if i made one that said blah blah formating drive it wouldnt actualy format the computr?
ccrh20083 years ago
good website for batch commands ss64.com don't fork yourself :)
cordale3 years ago
i think it works nicely thanks
eoscondor3 years ago
so you know .bat are old
you should use .cmd they are more powerful then .bat .
Craig Bird3 years ago
My god some of the comments here are ridiculas, cmd is not a virus or hacking tool, its how computers used to run, imagine people that computers were run using little blck boxes and nothing else, no windows, no applications to assist them in doing jobs and tasks, dos was used as a form or computing for everything, every task was completed using the cmd box alone, because computers have evolved so much, there is hardly any need for cmd anymore, its like a dyson, we dont need bags any more but you get the odd few people who dont like change so they use it, its a wicked tool for remote tasks and can be misused by hackers but tell me people what software cant be these days.....

Cmd is probably the best tool for learning, i think its great and love it
Files3 years ago
If it doesn't work when it pauses or something, open a command prompt and type shutdown -a. It means to abort the shutdown.
redmaker4 years ago
how do you stop it in anoying
Files redmaker3 years ago
Go to start, run, and type in cmd.exe, or go to the command prompt in any way you can.From there, type: shutdown -a shutdown -a means abort shutdown.
 Try this thing. It makes Windows XP crash and give you a BSOD (blue screen of death). It doesn't really do any harm at all. All it does is crash XP to make it restart which is useful if you got forked. 
 Sorry, I forgot the link. Here it is anyway:
http://www.governmentsecurity.org/forum/index.php?showtopic=2020
wizerd 7454 years ago
cloning fork bomb:
_

@echo off
set num=1
::DO NOT RUN THIS FILE!!!
:start
set name=%num%%0
copy "%0" "%name%"
start %0
start %name%
set /a num=%num%+1
set name=%num%%0
If not exist %name% (
copy "%0" "%name%"
start %name%
GoTo start
) else (
goto start
This should help fight fork bombs and other batches if your fast enough...

http://www.instructables.com/id/How-to-terminate-a-fork-bomb/
knoxarama4 years ago
it doesn't stop it make ur computer shutdown
redmaker4 years ago
you need to put pause on bottom of note pad or it will not work!!
wozza7 years ago
can i send a msg 2 a friend over the net with this instead of an im'er or not
@echo off
:A
Cls
echo MESSENGER
set /p n=Ip Adress:
set /p m=Message:
net send %n% %m%
Pause
Goto A
inevitable_chaos (author)  wozza7 years ago
If you set up a WAN with the person. Which, is abit complicated without 3rd party software. Ie. Hamachi is good for ease of use.
what dir do u put in the fork for IE?
nvm its just iexplore right?
@echo off :Start start iexplore GOTO Start Right?
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