What is Rust?

Rust is a programming language that was born to allow you to write code as fast as C or C++, eliminating the drawbacks with the garbage collector to avoid the problems arising from memory management. This was all thanks to Mozilla, but it has worked so well that many people are using it for many programs.

Currently, Rust is funded by large entities such as Amazon AWS, Microsoft Azure, Google Cloud, Facebook, and, since its inception, Mozilla Firefox. But it is also supported by a large community of users who share their experiences and help those new to the language.

As we know, Rust is quite fast, supports object-oriented programming, and is multi-purpose. So all in all it is an important programming language in our time.

So, let’s go for it.

Install Rust on Debian 11

From the Rust website, we are informed of a very simple installation procedure. This is due to the presence of an installation script that makes everything very easy.

So to start the process, you have to upgrade the operating system completely.

sudo apt update
sudo apt upgrade

The download of this script will be done using curl so it has to be installed on the system.

sudo apt install curl

If you do not have the build-essential package installed, you need to do so.

sudo apt install build-essential

Now all you have to do is run the following command:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

During the installation process, you will be asked how the installation will be performed. In this case, it is wise to choose option 1 which will install Rust with the default configuration.

When the process finishes, you will be prompted to run a command to update the system environment variables. This will allow us to use Rust commands from any location in the terminal.

source $HOME/.cargo/env

And you can also check the compiler version.

rustc --version
rustc 1.54.0 (a178d0322 2021-07-26)

Testing the Rust installation

When we install Rust, we also install cargo which is the Rust package manager and provides us with the command line tools to create our project without any problems.

So, we create our project by executing the following command

cargo new [project-name]

For example

cargo new osradar
     Created binary (application) `osradar` package

This will create a new folder called osradar which will have a file called Cargo.toml where you can specify your project dependencies and manifest. Also, there will be a folder called src where the source code for the application will be. This folder comes with a file called main.rs which is the main file where we will start our coding.

Now access the folder and run the Hello World that comes with the cargo new command.

cd osradar
cargo run

Output:

    Finished dev [unoptimized + debuginfo] target(s) in 0.00s
     Running `target/debug/osradar`
Hello, world!

So, Rust is installed correctly.

Conclusion

Rust is a modern programming language that presents an alternative to C++ and can be used in many places and for many things. Installing it on Debian 11 is something we can do without much difficulty as we have explained.

The post Install Rust Programming Language on Debian 11 appeared first on Linux Windows and android Tutorials.

Java is one of the preferred languages by many developers but it is also necessary to run other very important software. In this sense, Oracle from time to time releases a new version that includes good news.

So, if you are a developer and want to try Java on Debian 11, this post will help you with that.

Install Java on Debian 11

In the Debian 11 stable repositories we have the presence of OpenJDK which is a free Java implementation. We will be able to use and install it without compatibility problems because it is the same as the version distributed by Oracle.

For the sake of stability and compatibility with most applications, Debian 11 includes Java 11. This version besides being LTS is the base on which many important applications have been built.

So, this is the version we will install.

To install both the JDK (Java Development Kit) and the JRE (Java Runtime Environment) just execute in a terminal this pair of commands

sudo apt update
sudo apt install default-jdk
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  ca-certificates-java default-jdk-headless default-jre default-jre-headless fontconfig-config fonts-dejavu-core java-common libasound2 libasound2-data
  libavahi-client3 libavahi-common-data libavahi-common3 libcups2 libdrm-amdgpu1 libdrm-common libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libdrm2 libfontconfig1
  libgif7 libgl1 libgl1-mesa-dri libglapi-mesa libglvnd0 libglx-mesa0 libglx0 libgraphite2-3 libharfbuzz0b libjpeg62-turbo liblcms2-2 libllvm11 libnspr4 libnss3
  libpciaccess0 libpcsclite1 libsensors-config libsensors5 libvulkan1 libx11-6 libx11-data libx11-xcb1 libxau6 libxcb-dri2-0 libxcb-dri3-0 libxcb-glx0 libxcb-present0
  libxcb-shm0 libxcb-sync1 libxcb-xfixes0 libxcb1 libxdamage1 libxdmcp6 libxext6 libxfixes3 libxi6 libxrender1 libxshmfence1 libxtst6 libxxf86vm1 libz3-4
  openjdk-11-jdk openjdk-11-jdk-headless openjdk-11-jre openjdk-11-jre-headless x11-common
Suggested packages:
  libasound2-plugins alsa-utils cups-common liblcms2-utils pciutils pcscd lm-sensors openjdk-11-demo openjdk-11-source visualvm libnss-mdns fonts-dejavu-extra
  fonts-ipafont-gothic fonts-ipafont-mincho fonts-wqy-microhei | fonts-wqy-zenhei fonts-indic
Recommended packages:
  alsa-ucm-conf alsa-topology-conf mesa-vulkan-drivers | vulkan-icd libxt-dev libatk-wrapper-java-jni fonts-dejavu-extra
The following NEW packages will be installed:
  ca-certificates-java default-jdk default-jdk-headless default-jre default-jre-headless fontconfig-config fonts-dejavu-core java-common libasound2 libasound2-data
  libavahi-client3 libavahi-common-data libavahi-common3 libcups2 libdrm-amdgpu1 libdrm-common libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libdrm2 libfontconfig1
  libgif7 libgl1 libgl1-mesa-dri libglapi-mesa libglvnd0 libglx-mesa0 libglx0 libgraphite2-3 libharfbuzz0b libjpeg62-turbo liblcms2-2 libllvm11 libnspr4 libnss3
  libpciaccess0 libpcsclite1 libsensors-config libsensors5 libvulkan1 libx11-6 libx11-data libx11-xcb1 libxau6 libxcb-dri2-0 libxcb-dri3-0 libxcb-glx0 libxcb-present0
  libxcb-shm0 libxcb-sync1 libxcb-xfixes0 libxcb1 libxdamage1 libxdmcp6 libxext6 libxfixes3 libxi6 libxrender1 libxshmfence1 libxtst6 libxxf86vm1 libz3-4
  openjdk-11-jdk openjdk-11-jdk-headless openjdk-11-jre openjdk-11-jre-headless x11-common
0 upgraded, 67 newly installed, 0 to remove and 2 not upgraded.
Need to get 306 MB of archives.
After this operation, 574 MB of additional disk space will be used.
Do you want to continue? [Y/n]

In case you only want to install the JRE which is enough to run certain applications made with Java,

sudo apt install default-jre

At the end of the process, Java will be installed on your computer.

Configuring the Environment Variable

Once Java is installed, it is a good idea to set the JAVA_HOME environment variable that tells the system the path where Java is installed. This step, although optional for this post, may be necessary when installing more complex applications.

So, to know where JAVA is installed, just run the following command

sudo update-alternatives --config java

There you will be shown a screen where you can choose between several versions of Java installed. Of course, in this case, you should only see version 11 that was installed, but the important thing is that it will also show you the path where it will be.

In this case OpenJDK 11 is located at /usr/lib/jvm/java-11-openjdk-amd64/bin/java.

With this information, we can edit the /etc/environment file.

sudo nano /etc/environment

And add the following to the end of the file

JAVA_HOME="/usr/lib/jvm/java-11-openjdk-amd64"

Save the changes and close the text editor.

Apply the changes

source /etc/environment

Finally, the environment variable has been set correctly. To demonstrate this, run

echo $JAVA_HOME

Sample Output:

/usr/lib/jvm/java-11-openjdk-amd64

So, Java is installed without problems. Enjoy it!

The post Install Java on Debian 11 appeared first on Linux Windows and android Tutorials.

R is a free software environment for statistical computing and graphics. It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS.In addition, it is also a very well documented language and has its own LaTeX-like documentation format.

Features

Among the advantages of R, is its great syntactic similarity with S-Plus, which has facilitated the migration of many users. Equally important is the fact that it is a language with a very active development cycle.

One of R’s strengths is the ease with which well-designed publication-quality plots can be produced, including mathematical symbols and formulae where needed.

Another great advantage is that R is multiplatform, that is to say, it can be installed both in Windows and in any Linux distribution.

Let’s not talk anymore and we are going to install R programming on Ubuntu 18.04.

0. What you need

In the first place, it is necessary that you have installed Ubuntu 20.04 / 18.04 which is the recommended platform for development with this language.

It is also necessary that you have a user who can execute commands in the terminal as root.

So, let’s start.

1. Upgrade the system

In order to have the latest security patches and thus ensure the proper functioning of the system, it is necessary to make a general update to all packages.

:~$ sudo apt update && sudo apt upgrade

Now, you can continue with the installation.

2. Add GPG keys for the R repository

A simple way to install R is through APT. To do this we must add the R repository, however, first you have to add the GPG key.

:~$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9

Then, add the repository.

:~$ sudoadd-apt-repository "deb https://cloud.r-project.org/bin/linux/ubuntu $(lsb_release -cs)-cran40/"

Now, you can install R programming.

3. Install R programming

Now just run the command to install R programming.

:~$ sudo apt update
:~$ sudo apt install r-base

Now, you can start to use R.

4. Verify the installation and using R

Now, it is necessary to verify the installation that we have made. To do this, type on the terminal.

:~$ sudo -i R

And you’ll see R’s console.

Now let’s make the typical “Hello World” using R.

5. Conclusion

R is not a programming language for all people or for all circumstances. On the other hand, it is a language rather oriented to manipulation of data for statistical purposes and that makes it a quite reliable alternative for your subject.

The post How to install R programming on Ubuntu 20.04 /18.04? appeared first on Linux Windows and android Tutorials.

What is Rust?

Rust is an open source, multipurpose and new programming language that aims to retire to the C language. Although it is sponsored by Mozilla and Samsung, it is a community project. Its focus is primarily on large programs that run on the client and server side.

The main characteristics of Rust are performance, reliability, and productivity. Rust can compile and create applications very quickly; it is conducive to very few failures and its large documentation makes it possible to learn quickly.

Install Rust on OpenSUSE 15.2

Perhaps the best way to get Rust on OpenSUSE is through the official installer provided by the language. In this respect, this guarantees that we are running the latest version available and is not complicated.

To do this, open a terminal or connect via SSH and update OpenSUSE.

sudo zypper up

After this, make sure you have the curl package installed on the system

sudo zypper in curl

And all you have to do is run this command which will download and install Rust on your system

curl https://sh.rustup.rs -sSf | sh

During the installation, you will be asked how to install it. It is recommended that you use the default configuration by choosing option 1.

At the end you will get an output screen similar to this one:

And to make rust available in the terminal without problems, run:

source $HOME/.cargo/env

Finally, you can check the version we just installed.

rustc --version
rustc 1.50.0 (cb75ad5db 2021-02-10)

Testing Rust on OpenSUSE 15.2

Now it is necessary to make a test file and run it to make sure that everything is OK.

So, create the project folder and inside it the program folder. You can choose any name you want.

mkdir ~/projects
cd projects
mkdir example
cd example

Now we just need to add some rust code to the file. A hello world!! will suffice.

nano helloworld.rs

And add the following:

fn main() {
    println!("Hello, thanks for visiting Osradar blog.");
}

Save your changes and close the editor.

Then, compile the file with the rustc command

rustc helloworld.rs

And now run it

./helloworld

Finally, you get the following output, which indicates that Rust is now working properly.

Hello, thanks for visit Osradar blog.

So, enjoy it.

Conclusion

Installing the Rust language in Linux is a fairly simple process. The possibilities offered by this language are many. It is also a great alternative to traditional programming languages.

The post How to install Rust Programming Language on OpenSUSE 15.2? appeared first on Linux Windows and android Tutorials.

Why Windows Translator is a great tool to use?

As mentioned, there are third-party tools for translation. However, Microsoft has incorporated an effective translator designed especially for Windows 10. In fact, it is a UWP application. That is, Universal Windows Platform, so it works on any device with Windows 10. In addition, it is included in the system. So all you have to do is look for it in the start button. If it is not present, just download it from this link. Please note that you will be redirected to the Microsoft Store to complete the download and installation.

First steps with Windows Translator

Once the program has been launched, tips on how to use it are provided. These are very useful to use its capabilities to the fullest. Once the program has been launched, tips on how to use it are provided. These are very useful to use its capabilities to the fullest. For example, it shows the integration with Cortana and other valuable additions.

After these tips, the app interface is presented. It is very similar to that of other translators. Therefore, there are two columns. In the left one, the text to be translated is entered, and in the right one, the result is displayed. There are also a couple of upper boxes with the input and output languages.

Other ways to use Windows Translator.

Previously we saw the traditional mode of use. Which is similar to those offered by other translation services. However, Windows Translator offers unique features. A Voice section is displayed in the interface. So if you click on the microphone icon, you can dictate by voice the text to be translated.

On the other hand, there is a very striking function. And that is the opportunity to translate from an image. That is, if you have an image with a text included, then you can upload it to the program. Since the app is able to recognize the text and do the translation.

Additionally, touch screen users have another function. Freehand text input is possible. Consequently, the app will translate the text.

Additional Translator features

The program supports a large number of languages. In fact, they are valid for both input and output text. Moreover, the program incorporates a translation history. It is therefore possible to repeat past translations.

By clicking on the 3 dots in the upper right corner you can enter the tool settings. These allow you to adjust the operation. In fact, it is possible to modify operating parameters. For example, listen to male or female voice, preferred languages, interface color, font size, among others.

Another feature that makes it different from other options is the Phrasebook feature. It groups a series of phrases in different sections. Such as Essentials, Health, Food, Emergency and others. Just click on any section to display the phrases. Therefore, the user can use the phrase according to the occasion. As you can see, it is very useful for the user who travels.

In short, all these options make Windows Translator a great tool. Okay, that’s all for now. Stay tuned for more great tools for Windows 10. Goodbye!

The post The Windows 10 translator is a great tool appeared first on Linux Windows and android Tutorials.

The V Programming Language

In short, this programming language is quite small but surprisingly fast. This does not mean you can’t do interesting things with it. The project website describes it as “Simple, fast, safe, compiled language for developing maintainable software.”

Some of the main characteristics of this language are the following:

• Secure. Because it does not allow global variables, null values, strange behaviors of functions, nor undefined values.
• Fast. I think this is V’s main point. It can compile 1.5 Million lines of code per processor core. It is wonderful.
• Code translation from C. If you have a project from C, you can convert the source code to V, without any problem.
• Compiler with 0 dependencies. All in just 400 kb.
• Hot Code Reload. It is not necessary to compile frequently to get the desired changes. Of course, in some cases yes, where there are many lines of codes.

The development of this programming language that can be as fast as C but taking advantage of newer technologies is very active. This has improved in features and stability to date.

Now, it is perfectly usable and it is time to install it in Ubuntu 20.04 / Debian 10.

Install the V programming language on Ubuntu 20.04 / Debian 10

From the Github profile of the project, we are told that the best way to install V is by compiling the source code. Something quite simple to do the truth.

First, open a terminal session and install the basic packages for the compilation.

:~$ sudo apt install build-essential
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  binutils binutils-common binutils-x86-64-linux-gnu cpp cpp-8 dirmngr dpkg-dev fakeroot g++ g++-8 gcc gcc-8 gnupg gnupg-l10n gnupg-utils gpg gpg-agent gpg-wks-client
  gpg-wks-server gpgconf gpgsm libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan5 libassuan0 libatomic1 libbinutils libc-dev-bin
  libc6-dev libcc1-0 libdpkg-perl libfakeroot libfile-fcntllock-perl libgcc-8-dev libgomp1 libisl19 libitm1 libksba8 liblsan0 libmpc3 libmpfr6 libmpx2 libnpth0
  libquadmath0 libstdc++-8-dev libtsan0 libubsan1 linux-libc-dev make manpages-dev patch pinentry-curses
Suggested packages:
  binutils-doc cpp-doc gcc-8-locales pinentry-gnome3 tor debian-keyring g++-multilib g++-8-multilib gcc-8-doc libstdc++6-8-dbg gcc-multilib autoconf automake libtool
  flex bison gdb gcc-doc gcc-8-multilib libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan5-dbg liblsan0-dbg libtsan0-dbg libubsan1-dbg libmpx2-dbg
  libquadmath0-dbg parcimonie xloadimage scdaemon glibc-doc git bzr libstdc++-8-doc make-doc ed diffutils-doc pinentry-doc
The following NEW packages will be installed:
  binutils binutils-common binutils-x86-64-linux-gnu build-essential cpp cpp-8 dirmngr dpkg-dev fakeroot g++ g++-8 gcc gcc-8 gnupg gnupg-l10n gnupg-utils gpg gpg-agent
  gpg-wks-client gpg-wks-server gpgconf gpgsm libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan5 libassuan0 libatomic1 libbinutils
  libc-dev-bin libc6-dev libcc1-0 libdpkg-perl libfakeroot libfile-fcntllock-perl libgcc-8-dev libgomp1 libisl19 libitm1 libksba8 liblsan0 libmpc3 libmpfr6 libmpx2
  libnpth0 libquadmath0 libstdc++-8-dev libtsan0 libubsan1 linux-libc-dev make manpages-dev patch pinentry-curses
0 upgraded, 54 newly installed, 0 to remove and 0 not upgraded.
Need to get 56.4 MB of archives.
After this operation, 200 MB of additional disk space will be used.
Do you want to continue? [Y/n]

V also requires the C compiler to be installed. You probably already have it installed, but with the previous command, you will have already installed it.

To download the V source code for later compilation, we will clone the entire project. Therefore, you need to have Git installed.

To install Git, just run the following command:

:~$ sudo apt install git

However, you may be interested in installing the latest stable version available, for that you can read our posts:

How to install Git on Debian 10?

How to install Git on Ubuntu 20.04?

Once Git is successfully installed, we proceed to clone the repository.

:~$ git clone https://github.com/vlang/v
Cloning into 'v'...
remote: Enumerating objects: 15, done.
remote: Counting objects: 100% (15/15), done.
remote: Compressing objects: 100% (14/14), done.
remote: Total 32508 (delta 2), reused 3 (delta 0), pack-reused 32493
Receiving objects: 100% (32508/32508), 12.90 MiB | 50.00 KiB/s, done.
Resolving deltas: 100% (22885/22885), done.

A folder called “v” will now be generated at the site where the prompt was located. In this case, it is in the personal folder. You can move it anywhere you want.

Then, access the generated folder and compile the code.

:~$ cd v/
:~$ make

This will generate an executable called v. It is convenient to make a symbolic link to this file so that it can be used as a command from any location.

:~$ sudo ./v symlink

Now you can verify the use of the command.

:~$ v
For usage information, quit V REPL using `exit` and use `v help`
V 0.1.28 d4f0fe1
Use Ctrl-C or `exit` to exit
>>>

And to verify that the compiler is doing its job, we can run the “hello world” example from the examples folder that comes with the code clone.

:~$ cd v/examples/
:~$ v hello_world.v && ./hello_world
Hello, World!

V is being constantly updated. To update V, simply run:

:~$ v up

So, that is it. Enjoy the V programming language.

Conclusion

The V programming language has many important features such as the speed of compilation. It is the kind of project that only needs a boost to gain many followers. Now that you know how to install it on Ubuntu 20.04 / Debian 10, you can explore all its possibilities.

Please share this post and join our Telegram channel.

The post How to install the V programming Language on Ubuntu 20.04 / Debian 10? appeared first on Linux Windows and android Tutorials.

However, Windows 10 by default is not compatible with this programming language, so to run applications programmed with it, we have to install all the libraries and dependencies of Python in the system and configure them, a task that for many people can become complicated.

Installing Python 3

For this reason, today we will learn how to install Python 3 in Windows 10. In the first place, we need to download it, Once on the page, we choose Download Python 3.7.4 (or the number that is when we visit it, as long as it is 3)

Once the download is finished, we have to proceed to execute it as the Administrator user. A window will appear, select both options at the bottom of it; install launcher for all users (to grant access for all users) and Add Python 3.7 PATH (add the path of the interpreter to the PATH variable). This second option is imperative to select, inasmuch as allow run python.exe from anywhere on the command line (otherwise, we would have to always put the absolute path).

Then, press Next to start the installation.

A couple of minutes later, our installation will be finished. If a warning message appears, asking for a disabling path length limit, then we need to approve it.

Testing Python 3 operation

To start python, we have to press Windows + R keys, to invocate CMD box. Once there, type python. Thereupon we will have a console with Python interpreter and we could make operations like additions, subtraction and more.

To go out of Python, type

exit()

Postscript. Installing Python 3 from Windows Store

It is quite known that most of the users in Windows 10 would like to install programs, just by clicking on some buttons. As a matter of fact, Windows Store is full of programs (free or paid) ready to be downloaded and installed by users. With this in mind, Python Software Foundation has to dabble in Windows Store, offer Python 3 to those users who own at least Windows 10 version 17763.0 or high. However, it does not come with absolutely all the components that are included in the complete conventional installer. Inasmuch as, developers are still working to be able to bring all these components to this installer. In addition, they also warn that there may be a problem and some applications may not work properly. Although this may be true, this option is very interesting and for sure will be improved in the future.

Now, we have installed Python 3 in Windows 10, and we can start to use it. Please visit our tutorial about the backup windows registry.

The post How to install Python 3 in Windows 10? appeared first on Linux Windows and android Tutorials.

In the past, we’ve talked about GO. GO is a programming language that is becoming increasingly popular among developers and sysadmin. Initially, it was created by Google but has been expanding to be used by many current developers. It is inspired by C++ and has binaries for Windows, Linux and Mac OS. It is also open source under the BSD license.

1.- Upgrade the system

First of all, it is necessary to make a complete update to the system. For this, run the following command:

:~$ su
:~# yum update

The main objective of this is to make your system have the latest security patches available. This way it will be more stable and you will be ready to continue with the process.

2.- Download and install GO

CentOS 7 is a 64-bit system, so we will download the corresponding binaries using wget. If you do not have it installed, do it first.

:~# yum install wget
:~# wget https://dl.google.com/go/go1.11.5.linux-amd64.tar.gz

At the time of writing this post, the latest stable version of GO is 1.11.5. Check the GO website for the latest version.

After doing this, it is necessary to unzip the downloaded folder. We will do it in the /usr/local directory.

:~# tar -zxvf go1.11.5.linux-amd64.tar.gz -C /usr/local

So that the installation does not have problems. It is necessary to define environment variables. I mean GOROOT and PATH.

:~# echo 'export GOROOT=/usr/local/go' | tee -a /etc/profile
:~# echo 'export PATH=$PATH:/usr/local/go/bin' | tee -a /etc/profile

Finally, refresh your bash profile.

:~# source /etc/profile

So, test GO.

3.- Test the installation

To verify that the installation has been correct, it is first necessary to show the version of GO. To do it, run this command:

:~# go version
:~# go env

However, the best way to check if your GO is correctly installed is to make a program and run it.

First, create a folder where the program will be located.

:~# mkdir -p src/test
:~# cd src/test

Next, create the file. I will name it test.go.

:~# nano test.go

And add the following:

package main
import "fmt"
func main() {
    fmt.Printf("Hi, I am Angelo. Thanks for visit Osradar\n")
}

Finally, run the file.

:~# go run test.go

So, GO is ready for the action.

Conclusion

Learning to program using GO is a good idea these days. The project is quite mature and more and more people are interested in this language. Installing GO on CentOS 7 is not complicated at all.

Please share this post with your friends.

The post Install GO language on CentOS 7 appeared first on Linux Windows and android Tutorials.