So, Git?

If you are starting to develop applications you may not know that Git is a free, open-source version control system and that it is perhaps the best. Many developers rely on it to control the versions of their applications. By versions, we mean those in development.

Using Git you can control and separate development in each of those development branches. So the changes of one do not affect the others.

Read Introduction to the Git branches.

In this way, it is good practice to develop applications using a version control system as support.

Install Git on Debian 11 / 10

Debian 10 is one of the few distributions that have such complete package repositories. So, presumably, there is some Git in the official repositories.

However, it is also a good idea, to know how to install Git differently in case we need it. This way is compiling the source code of Git and get the latest stable version. In this tutorial, I will teach you how to do it both ways.

1) Using the official repository on Debian 11 / 10

Debian 11 / 10 include Git in the official repositories. Using this option, the installation is quite easy, and just open a terminal session and run the following command:

:~$ sudo apt install git

Or, if you do not have sudo, please read How to enable sudo on Debian 11/10?

Then, you can check the installed version.

:~$ git --version
git version 2.30.2

Now, you can use it.

2) Building the Git source code

Compiling the Git source code is the best way to get the latest version. All this in a safe way because it will not be compiled by third parties.

The process is simple but requires a few extra steps. So let us get started.

First, install the necessary programs to make the compilation:

:~$ sudo apt install build-essential make libssl-dev libghc-zlib-dev libcurl4-gnutls-dev libexpat1-dev gettext unzip

Now, we can download the source code.

:~$ cd /tmp/
:~$ wget https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.33.0.tar.gz

Next, decompress it and access to the folder.

:~$ tar xvfz git-2.33.0.tar.gz
:~$ cd git-2.33.0

Now, you can start the compilation by running the following commands:

:~$ sudo make prefix=/usr/local all
:~$ sudo make prefix=/usr/local install

Next, check the installed version.

:~$ git --version

And that is it. You can start to use Git.

Conclusion

Git is one of those applications that every developer must be able to manage to improve their workflow. Therefore, it is important to install it in Debian 10 and two ways have been shown to achieve this. One of them is using the package available in the official repositories and the other is compiling the source code.

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So imagine for a moment that you lose access to your hard drive. All your personal information could be exposed, even if you took the precaution of deleting it. Sounds a little scary, doesn’t it? However, they have just released a program whose main function is to overwrite the blank space you have on a hard drive. In this way, the information really remains blank, making it impossible to recover it later. In fact, the name of the program is Overwrite. A very interesting tool. So here we show you how to install Overwrite for the empty space of the disks in Windows 10.

Compiling Overwrite with Visual Studio Code

Overwrite is a program written in C language, which is contained in a single file. It can be compiled on different platforms, but here we are going to compile for Windows 10. With that in mind, we are going to use Visual Studio Code. To know how to install it please check our post. In the same way, we’ll need a C/C++ Compiler, for this example I’m going to use MinGW. The installation process is simple, just go to this address and download the installer.

Then double click on the installer. When the wizard starts, select all the options for a basic installation. Next, wait for the wizard to download all the necessary files and proceed to install them. This will take a few minutes, depending on your internet connection.

Add MinGW to the environment variables.

Next, we’ll add the compiler to the Windows environment variables. This is very important because it will allow you to compile from any CMD without going to the address of the program. Also, the Run Code extension of the editor uses the command prompt of Windows to run the compiler. To find out how to do this, I invite you to check out our post about Wget in Windows 10. Here I simply show you the already added variable:

to check that everything has been installed correctly, please press the “Win+R” combination, and run CMD to open a Command Pro.

In the command prompt please type the following command:

gcc

If running the command throws the error that there are no input files, then we are ready to move on.

Install the extensions in Visual Studio Code.

Now we need to add the necessary extensions to compile in C in Visual Studio Code. With this in mind, open the program. And in the Marketplace write C++ and Code Runner, and proceed to download and install them.

All right, we’re ready to compile the program. The first thing we need to do is to download the package from here

Once downloaded, please remember the location of the download and open Visual Studio Code. Once there, in the left column in Explore, locate the folder where you downloaded the program and click on overwrite.c. Then on the menu on the right press Run.

Testing Overwrite

Finally, we have compiled Overwrite, as you can see in the previous screen, there is already an executable file for windows. However, this program does not have a graphical interface but must be executed in a CMD. In addition, it is necessary to open a Command Prompt at the location of the program. To avoid this complication, we will add the environment variable.

Uses of Overwrite

overwrite [-h -v -test -one -rand -block:] (-files: &| -data:) -path: 
-h             Print help and usage message. 
-v             Print program version. 
-test          For test, don't delete written files. 
-one           Overwrite with 1, default with 0. 
-rand          Overwrite with random data, default with 0. 
-block         Block size, default 4096 bytes as NTFS and EXT4. 
-files         Number of files to write, block size each. 
-data          Quantity of data to write, ex: 1mb, 1gb, all. 
-path          Path to directory where to write data. 

Let’s use a practical example. Write 10 files and 10Mb data, on Windows C drive.

 overwrite -files:10 -data:10mb -path:c:\ 

Obviously, there are several commands we can use to run the tool. Very well, we have learned how to install Overwrite for the empty space of the disks in Windows 10. And also, we have seen how to compile C in Visual Studio Code. I hope you enjoyed this tutorial as much as I did. See you next time.

The post Overwrite in Windows 10. A program that overwrites empty space on the disk. appeared first on Linux Windows and android Tutorials.