I have a script which runs remotely on a school PC, which is part of a renderfarm I build for my friend. I needed it to be able to upload the rendered file to my server. Here's how I managed to do this:

On my server I have a page with this simple form to upload the file:

<form action="" method="POST" enctype="multipart/form-data">
<input type="file" name="rfile" />
<input type="submit"/>

This following command send a file via a POST request:

curl --form rfile=@renderedfile.jpg --form press=submit http://example.com/upload.php

This script is platform-independent. Enjoy!

A collection of ported Unix Utilities for Windows

Hi! This repo contains several utilities which are massively useful, for sysadmins, programmers and students.

Go ahead and explore! All utilities are kept up-to-date.

Links: Rahul's Windows Executable Repository; README

Hey, Rahul! Do you know how to make an app?

This is a statement that I've heard countless times over the past few years, ever since I've gained popularity in school as a geek/programmer.

The next statement is usually "I have a brilliant idea for a startup, I just need you to implement it."

From juniors, to seniors to even teachers, everyone appears to have amazing ideas which have never been though of before and hold the capibility to earn millions of dollars. But that's not how this works. There's a reason why most stratups fail, and it's because they don't even have a good idea, let alone plan.

I've never had my own startup, but even I know that the first thing to do is to find a real-life problem, then solve it using technology. You cannot just come up with some shattering new idea on the spot, that rarely happens, if ever.

It's even more annoying when they're after me for months to help them out with an idea that I know is destined to fail. I don't like to kill your enthusiasm, but the next time that you see me, please think before calling me out, does your idea actually have the capability to make a difference?


Rickroll WiFi is an awesome script which rickrolls whoever is searching for a WiFi network by changing the SSID of a hotspot to the lyrics of Never Gonna Give You Up.



An online friend of mine came up with this idea originally. I thought it was a great prank, but I don't currently have an Arduino... So Rickroll WiFi for Windows was born.

Here's the source code (licensed under the MIT License):

@echo off 
title Rickroll WiFi for Windows
echo Rickroll WiFi for Windows
echo by http://rahul2001.com/
FOR /F "tokens=*" %%G IN (rickme.txt) DO (
netsh wlan set hostednetwork ssid="%%G" key=rahul_is_so_cool! >nul
netsh wlan start hostednetwork >nul
timeout /t 1 >nul
netsh wlan stop hostednetwork >nul
echo REPEAT!
goto :Main

Save it as a batch file, and run it with administrator privileges. Be sure to change the password, and save all your data in rickme.txt. It will change the SSID every second with the subsequent line from the text file.

Here's what it looks like on Windows: Windows-Screenshot Here's what the rickme.txt file should look like:


It literally took me 5 minutes to write this :P
It is still pretty crude though, and I'll update the code when I manage to make it a bit smoother.

The only disadvantage is that the SSID of a WiFi network cannot be longer than 32 characters, so all the lyrics don't work.
Unfortunately, the SSID doesn't change smoothly on Windows, but it still looks pretty cool :)

More information about how this works can be found here.

I really liked the default email app that used to come with Android. The bare-bones interface used to get the job done without any hassle.

Unfortunately, Google decided to kill it with Lollipop and integrated all other email services with Gmail. This was an unwelcome decision - I like to keep my inboxes separate... I tried some other apps on the play store, but most didn't work well, and the ones which did were filled with ads or required payment for basic features.

So I borrowed my friend's phone which still ran KitKat, and extracted the apk for the stock email app. This is the last working version of the app ever released. It doesn't have the material design icon, but that doesn't really matter...

You can download it here.

These aren't official, just general internet slang:

Level 0

The stuff you browse everyday: YouTube, DuckDuckGo, Facebook, etc.

Level 1 - Surface Web

This level is still accessible through normal means, but contains "darker" websites, such as Reddit.

Level 2 - Bergie Web

This level is the last one normally accessible: all levels that follow this one have to be accessed with a proxy, Tor or by modifying your hardware. In this level you can find some “underground” but still indexed websites, such as 4chan.

Level 3 - Deep Web

The first part of this level has to be accessed with a proxy. It contains Hacking, Adult Content, etc. This is the beginning of the Deep Web. The second part of this level is only accessible through Tor, and contains similar stuff.

Level 4 - Charter Web

This level is also divided in two parts. The first can be accessed through Tor. Things such as drug and human trafficking, banned movies and books and black markets exist there.

The second part can be accessed through a hardware modification: a “Closed Shell System”. This is serious. This part of the Charter Web contains Illegal Content, experimental hardware information ("Gadolinium Gallium Garnet Quantum Electronic Processors"), but also darker information, such as the "Law of 13", World War 2 experiments, and even the location of Atlantis.

Level 5 - Mariana's Web

A place where AIs come together and comment on cat videos. You need access to quantum computers to see this stuff...

Safe Mode can be really useful on your phone, when an app starts to misbehave, your phone starts crashing or your phone is infected by malware.

But what if you really need that superb backup tool you love? Well, don't fret, because I have the perfect solution for you...

UPDATE: This technique has been tested on the following devices:

  • Moto G (Turbo Edition) (Android 6.0.1)
  • Samsung Galaxy Note 5 (Android 5.1.1)
  • HTC Desire 816 (Android 5.0.1)

NOTE: This technique relies on something really simple that was probably overlooked by the developers and may be fixed in the future. I will be posting updates soon...

Step 1

Open the app in normal mode. normal app

Step 2

Exit the app, but make sure you don't swipe it away from the 'Recent Apps' menu. recent apps

Step 3

Reboot into Safe Mode by long-pressing the 'Power Off' option. The method to enter Safe Mode may vary on some devices. Safe mode

Step 4

You won't be able to run the app in Safe Mode enter image description here

Step 5

Open the 'Recent Apps' menu in Safe Mode Safe Mode - Recent Apps

Step 6

Tap on the app, and you will be able to run it. enter image description here


Often while using command prompt, I want to create a directory and enter it. To do this I need to type in the following:

C:\Users\Rahul\Documents\Coding>md mydirectory
C:\Users\Rahul\Documents\Coding>cd mydirectory

This is such basic stuff, you would think that Windows would have functionality to do this with one command... But does it? No.

Which is why I've come up with the ultimate solution... Which is just common sense, really.

  • Open up command prompt and type copy con mdc.cmd.
    This let's you create and edit the file 'mdc.cmd', which is located by default in the System32 Folder.

  • Type @md %1 && cd /d %1, and press enter. These commends basically pass on the first command line argument of mdc.cmd to md, and then chose that directory with cd /d. I like to have the /d switch because it allows us to switch the current drive as well, but it is totally up to you.

  • Press Ctrl+Z and hit enter to stop editing the file.

Now everytime you want to create and enter a directory, just enter mdc mydirectory and Command Prompt will automatically enter mydirectory after creating it.

(or... How I got MinGW to work with Notepad++)

A few days ago, I decided to finally start learning C++. Until now I've only used a rather restricted version of C for robotics. However, I faced a problem: I never do all my work on a single PC. Sometimes I work in school, sometimes at home on my desktop, and sometimes at my grandparents' house on my laptop.
I usually use a portable version of Notepad++ for coding, but then again, most of my code is either web development or batch scripting - stuff that doesn't need a compiler.

Getting g++ to work with proper Notepad++ installations is easy, but this method doesn't work with portable versions since you cannot rely on environment variables. So I spent some time thinking about this issue, and came up with the following solution to integrate a portable version of Notepad++, my favorite editor, with MinGW:

  • Download Notepad++ Portable
  • Add the NppExec plugin from the Plugin Manager.
  • Download MinGW for Windows.
  • Extract the contents of the archive you downloaded.
  • Copy both to a portable drive.
  • Download this small utility I made: r-launch. This basically allows you to run MinGW commands from the Notepad++ directory.
  • Save r-launch.exe to the Notepad++Portable\App\Notepad++ folder of your portable installation.
  • Create a text file called r-launch.txt in the same directory and store the path of the MinGW installation in it. My MinGW installation was in G:\Coding\MinGW and my Notepad++ executable was in G:\Software\Notepad++Portable\App\Notepad++, so my text file read:
  • Open the NppExec windows in Notepad++ and type your MinGW commands like you normally would, only with r-launch.exe in front of them.
  • You're Done!

Here's the code I use in the NppExec window:

Saves and compiles in the same directory with the same name


Run in NppExec Console:
Runs the compiled version of the program.


Run in cmd:
Runs the compiled version of the program.


Compile and Run in NppExec Console:


Compile and Run in cmd:


These commands use g++, but you can use any of the utilities that comes with MinGW.


The source code of r-launch (licensed under the MIT License):

@echo off
Title r-launch: Rahul's MinGW Launcher
if [%1]==[] goto :help
goto :launch

echo r-launch: Rahul's MinGW Launcher for Notepad++
echo http://rahul2001.com/
echo ----------------------------------------------
echo This file lets you add the MinGW utilities to
echo Notepad++.
echo Instructions:
echo 1. Save this executable to the same folder as
echo    the Notepad++.
echo 2. Save the path of the MinGW folder in a text
echo    file named 'r-launch.txt' in the same 
echo    folder as this executable.
echo 3. Run your commands with 'r-launch' in front
echo    of them from the NppExec plugin for
echo    Notepad++.
if %0 == "%~0" pause
goto :eof

set /p path=

if not exist r-launch.txt goto error1
if not exist notepad++.exe goto error2
if not exist %path% goto error3
if not exist %path%\set_distro_paths.bat goto error4

call %path%\set_distro_paths.bat
goto :eof

echo ERROR: 'r-launch.txt' doesn't exist in the same directory as this executable.
goto :eof
echo ERROR: 'notepad++.exe' doesn't exist in the same directory as this executable.
goto :eof
echo ERROR: The directory specified in r-launch.txt doesn't exist.
goto :eof
echo ERROR: 'set_distro_paths.bat' doesn't exist at in the directory specified in r-launch.txt.
goto :eof

Hi! This is a simple databaseless script to save form data to a file. The code is split into four parts:
- The HTML form
- The PHP code
- The data file
- The .htaccess file

Your document should contain a similar form:

<form novalidate="" method="post" action="submit.php" id="SchoolDetails">
<label for="School">School School:</label>
<input id="School" name="School" type="text" placeholder="School" value="" spellcheck="false" class="">
<br />
<label for="TeamSchool">Team Name:</label>
<input id="Team" name="Team" type="text" placeholder="Team" value="" spellcheck="false" class="">
<input id="submit" name="submit" type="submit" value="Submit!">

Every Input must have the 'name' attribute. Remember to change submit.php according to the name of your PHP file

The PHP:
This is the PHP code that does the actual work:

    header("Location: thanks.html"); //This is the page to which the user will be redirected...
    $handle = fopen("userdata.txt", "a"); //this is the name of the text file in which all the data will get stored...
    $post = $_POST;
    $post['----------=User Information'] = '----------';
    $post['User IP'] = $_SERVER['REMOTE_ADDR']; //Saves the IP Address
    $post['Browser/UserAgent'] = $_SERVER['HTTP_USER_AGENT']; //Saves the User Agent
    $post['Referrer'] = $_SERVER['HTTP_REFERER']; //Saves the URL of the page which contains the form
    $post['HTTPS'] = $_SERVER['HTTPS']; //Is the script queried through a secure HTTP protocol?   
    $post['Date&Time'] = date("l jS \of F Y h:i:s A"); //Saves the date and time at which the form was submitted
    //add more global variables here
    $post['========================END'] = '=======================';
    //Save all the form data as Input_Name=Input_Value
    foreach($post as $variable => $value) 
        fwrite($handle, $variable);
        fwrite($handle, "=");
        fwrite($handle, $value);
        fwrite($handle, PHP_EOL);
    fwrite($handle, PHP_EOL);

You can add many more PHP global variables. Change thanks.html to point to the webpage to which the users are redirected once they submit the form. userdata.txt is the file to which everything is stored. You can name it anything, but be sure to change the file name everywhere in the code.

The data file:
Just create an empty file called userdata.txt or whatever you want to call it and everything will be saved to it.
Note: It doesn't have to be a .txt file, it can be any format, just make sure it isn't .php because that can be a big security vulnerability.

The .htaccess file:
Now, you have to make a decision. Do you want to be able to see the result on the go without logging in every time? If so, rename your data file to something guessable like MyUserData5566789334.txt so that only you know the URL. After this, just visit the file in your web browser to see the entries. However, if you want something more secure, edit the .htaccess file in the directory in which your file is stored to contain the following:

<Files "userdata.txt">
Order Allow,Deny
Deny from all

The downside of this is that you will have to use FTP or your server's web-based administration system to view the file every time.

That's it! Enjoy your new submission form!