2.First line which you write in a script is : #!bash_location . It’s a good practice to use this which is called hash Bank and then the location of your bash . To get the location of your bash . Command : $which bash .

So now first line will look like :

As script is a sequence of commands so we can normally write ls -l for long listing .

3.To execute it one need to give the execute permission to the script but we can check , without giving the permission let’s see what happens so to execute a script you just need to write dot forward slash and then the name of your script . Command : $./script_name.sh

To provide permission we can use the command : $ chmod +x script_name.sh .Now this will change the permission of a file to the execution so you can execute this script by giving this permission . Now you can execute the script file :

So when you execute this , it gives you the long listing of files .

4.With this scripting you can execute all sequence of command not only one command .For example we can do ls and then let’s echo hello world .

Now when you execute :

Scripting is much advanced than this so it has a functions and it has loops and if conditions etc.

This is about the introduction to Bash Scripting .

The post Introduction to Bash Scripting appeared first on CodeBind.com.

1. In the image provided below, you can see the Bluetooth headset. 

2. For connecting your Bluetooth headset, you need to click the arrow icon in the taskbar and click the Bluetooth icon. 

3. If you don’t see that icon, you can also search for that icon by clicking on the search icon. In the search icon, you should search for the settings app. Once the settings app opens, click on Bluetooth and devices on the left-hand side. Turn on your Bluetooth. Click on the view more devices option. 

4. Click on add device option. 

5. From the list of options provided, select the Bluetooth option. 

6. Windows will detect the Bluetooth device. 

7. If you don’t want to add a device, you can directly click on the Bluetooth icon in the taskbar and click on show Bluetooth devices. It will redirect you to the same location. Or you can directly click on Add a Bluetooth device. Again the same set of steps will be repeated. 

8. Click on that device. It will start to connect.

9. Once the device is connected, you can start using it. 

10. You can test it by playing any video on your Windows 11 Operating System. 

These are the steps for connecting Bluetooth headphones to a laptop in your Windows 11 Operating System. 

The post How to Connect Bluetooth Headphones to Laptop appeared first on CodeBind.com.

1. Before the installation, we need to check whether java is installed or not. Click on the search icon and search for cmd. 

2. Once the command prompt opens, type java -version and press enter. If you see this kind of message which is displayed in the image below, then java is not installed in your Windows 11 Operating System. 

3. To install java, open a web browser of your choice and search for java JDK download. Click on the first link.

4. Once the link opens, scroll down and click on Windows. Then click the link next to x64 Installer. It will start to download. 

5. Once the download is complete, click on the exe file and minimize the browser. It will show a warning. Click on Yes.

6. In the installer window, click on Next.

7. This will be the location where java will be installed. If you want to change the location, then click on the Change option. I am going to leave it as default and click on Next.

8. It will start the installation process. It will display the installation successful message. Click Close on that window. 

9. Now, open File Explorer and go to the location where java is installed. Click on the java folder. 

10. To set the environment variable for java, click on the search icon and type Edit Environment and click on the search result. 

11. It will open this kind of window. Click on the path under system variables. Then, click on Edit. Here, you need to add the path. Go to the bin folder and copy the path. You can either double click or click on New. Then, paste the path. Press Enter. It will add the path. Then, click on Ok. Some applications need java home environment variables. 

12. To set a home environment variable, you need to click on the New under the user variable section. 

13. Here, you need to provide the variable name as JAVA_HOME and the variable value will be the folder. Just copy the path to the JDK folder and don’t go inside the bin folder. Paste that path into a variable value. Click on Ok.

14. Once you have installed java and the environment variable, you can view java in the command line. Click on the search icon and type cmd. Once the command prompt window opens, type java -version and press enter. You will be able to see the latest version of java. 

15. To compile a java file, you need to use the javac command. Type javac -version and press enter. You will be able to see the javac version on the screen. 

16. Now, open a web browser of your choice and search for eclipse ide. Click on the first link. 

17. Once the link opens, click on the download button at the top. 

18. It will redirect you to another page. Scroll down and click on the download button for 64 bit. 

19. It will redirect you to another page. Click on the download button on that page. It will start to download. 

20. Once the download is complete, click on the exe file and minimize the browser. When the eclipse installer starts, you need to select the purpose for which you are installing. I am going to select the first option which is for java developers. 

21. Since I have already installed java in my Windows 11 operating System eclipse will recognize that path. This will be the location where it will be installed. If you want you can change the path. Then click on the Install button. 

22. In the license agreement window, click on Accept Now button. It will start the installation. 

23. When it is successfully installed, click on the Launch button. A shortcut will also appear on your desktop. 

24. When you start eclipse ide for the first time, it will ask you to provide the workspace folder. If you want you can change the default folder by clicking on the Browse option. I am going to leave it as default. So, check that checkbox and click on the Launch button.

25. Eclipse IDE will look like this. Click on Create a new java project. Click on minimize button to minimize the welcome window. Close the donate tab. Click on create a java project. 

26. You have to provide a name for your java project. I am going to name the project hello. This will be the default location where it will be saved. If you have installed Java JDK separately, you can choose the second option under JRE. For the JDK version, select 17. I am going to leave the project layout as default and click on Next.

27. In the next window, I am going to leave everything as default and click on the Finish button. 

28. In the module name, I am going to leave it as default. Check the checkbox and click on Create. 

29. It will create a project for you. I am going to remove the java file as I am going to create my own java class. Right-click and click on New Class. 

30. I am going to name the class Hello. The modifier will be public. For the method, I am going to choose a public static void main. Then, click on Finish.

31. If you want to change the font size, click on Window and preferences. Here, you need to click on general and select appearance. Expand that option and click on colors and fonts. From here, click on Java and click on java editor text font. Then, click on Edit.

32. It will allow you to change the font and font size. After changing it, click on Apply. 

33. Now the font size has been increased. I am going to write a very simple code. After writing the code, click on the Run Hello.java icon. It will run your code. The output will be displayed. 

These are the steps for installing Eclipse 2021-09 with Java 17 on Windows 11 Operating System. 

The post How to Install Eclipse 2021 -09 with Java on Windows 11 appeared first on CodeBind.com.

1. Open a web browser of your choice and search for MongoDB. Scroll down and click on mongodb.com.

2. Once the link opens, hover over the products tab and click on Community server under Community edition. 

3. It will redirect you to the downloads page. I am going to download the MongoDB community server. I am going to install the current version. The platform is windows and the package is MSI. Then, click on the Download button. It will start to download.

4. Once the download is complete, click on the MSI file and minimize the browser. 

5. In the first window, click on the Next button. 

6. In the license agreement window, accept the agreement and click on Next. 

7. In the setup type window, choose complete setup. 

8. In this window, choose the first radio button. If you don’t have any reason to change the data directory and log directory, leave it as default and click on Next.

9. In the next window, leave the checkbox as checked and click on Next.

10. In this window, click on the Install option. 

11. It will show a warning. Click on Yes.

12. Once the installation is finished, click on the Finish button.

13. You can check whether it is installed or not by opening the command prompt. Click on the search icon and search for cmd. Once the command prompt opens, type mongo and press enter. It will say mongo is not recognized. This is because we have not set the environment variable.

14. Go to the location where MongoDB is installed. Go to the bin folder and copy the path. Click on the search icon and search for environment variables. Once it opens, click on the path under system variables.

15. Click on New and paste the path. Click Ok on all the tabs. 

16. Open the command prompt once again, type mongo, and press enter. This time it will show the version of mongo. 

17. If you want to view all the databases then type show dbs; and press enter. It will display all the databases. 

18. To create a new database you need to type use and the name of your database. I am going to name it as use mydb and press enter. Once you have created the database is created you can give the show db command and check whether the database is added or not. But still, it will not display the name of the database that you have created. This is because you have to fill your database with some documents. Then only it will display the database. 

19. To fill in some data, type the command provided in the image below. It will insert the database. When you type show dbs;, it will display the newly added database. 

20. To view all the collections inside your database, type show collections; and press enter. It will display all the collections inside that database. 

21. To view the data or documents type the command provided in the image below. It will display all the documents. Now minimize the command prompt and go to MongoDB. 

22. When you start for the first time it will display this kind of window. Click on Next in all the windows. Click on Get Started in the last window. 

23. Click on start using compass. 

24. To create a new database connection, click on Connect, and click on click on a new connection. To connect a database, we need a connection string. To know more about the connection string, you can click on the info icon.

25. It will redirect you to a website where you can know more about connection strings. 

26. When you go to the command prompt you will be able to see the connection string. You have to copy that path and paste it into the connection string area. Once you have pasted, click on Connect.

27. It will connect you to the MongoDB server. On the left-hand side, you will be able to see all the databases. 

28. When you click on the database that we have created in the command prompt, it will display the number of documents that we have created. 

29. When you click on the document, it helps to visualize your data inside. 

These are the steps for downloading and installing MongoDB 5 on your Windows 11 Operating System. 

The post How to Download and Install MongoDB 5 on Windows 11 appeared first on CodeBind.com.

1. Before the installation, we need to check whether java is installed or not. Click on the search icon and search for cmd. 

2. Once the command prompt opens, type java -version and press enter. If you see this kind of message which is displayed in the image below, then java is not installed in your Windows 11 Operating System. 

3. To install java, open a web browser of your choice and search for java JDK download. Click on the first link.

4. Once the link opens, scroll down and click on Windows. Then click the link next to x64 Installer. It will start to download. 

5. Once the download is complete, click on the exe file and minimize the browser. It will show a warning. Click on Yes.

6. In the installer window, click on Next.

7. This will be the location where java will be installed. If you want to change the location, then click on the Change option. I am going to leave it as default and click on Next.

8. It will start the installation process. It will display the installation successful message. Click Close on that window. 

9. Now, open File Explorer and go to the location where java is installed. Click on the java folder. 

10. To set the environment variable for java, click on the search icon and type Edit Environment and click on the search result. 

11. It will open this kind of window. Click on the path under system variables. Then, click on Edit. Here, you need to add the path. Go to the bin folder and copy the path. You can either double click or click on New. Then, paste the path. Press Enter. It will add the path. Then, click on Ok. Some applications need java home environment variables. 

12. To set a home environment variable, you need to click on the New under the user variable section. 

13. Here, you need to provide the variable name as JAVA_HOME and the variable value will be the folder. Just copy the path to the JDK folder and don’t go inside the bin folder. Paste that path into a variable value. Click on Ok.

14. Once you have installed java and the environment variable, you can view java in the command line. Click on the search icon and type cmd. Once the command prompt window opens, type java -version and press enter. You will be able to see the latest version of java. 

15. To compile a java file, you need to use the javac command. Type javac -version and press enter. You will be able to see the javac version on the screen. 

16. Now, open a web browser of your choice and search for eclipse ide. Click on the first link. 

17. Once the link opens, click on the download button at the top. 

18. It will redirect you to another page. Scroll down and click on the download button for 64 bit. 

19. It will redirect you to another page. Click on the download button on that page. It will start to download. 

20. Once the download is complete, click on the exe file and minimize the browser. When the eclipse installer starts, you need to select the purpose for which you are installing. I am going to select the first option which is for java developers. 

21. Since I have already installed java in my Windows 11 operating System eclipse will recognize that path. This will be the location where it will be installed. If you want you can change the path. Then click on the Install button. 

22. In the license agreement window, click on Accept Now button. It will start the installation. 

23. When it is successfully installed, click on the Launch button. A shortcut will also appear on your desktop. 

24. When you start eclipse ide for the first time, it will ask you to provide the workspace folder. If you want you can change the default folder by clicking on the Browse option. I am going to leave it as default. So, check that checkbox and click on the Launch button.

25. Eclipse IDE will look like this. Click on Create a new java project. Click on minimize button to minimize the welcome window. Close the donate tab. Click on create a java project. 

26. You have to provide a name for your java project. I am going to name the project hello. This will be the default location where it will be saved. If you have installed Java JDK separately, you can choose the second option under JRE. For the JDK version, select 17. I am going to leave the project layout as default and click on Next.

27. In the next window, I am going to leave everything as default and click on the Finish button. 

28. In the module name, I am going to leave it as default. Check the checkbox and click on Create. 

29. It will create a project for you. I am going to remove the java file as I am going to create my own java class. Right-click and click on New Class. 

30. I am going to name the class Hello. The modifier will be public. For the method, I am going to choose a public static void main. Then, click on Finish.

31. If you want to change the font size, click on Window and preferences. Here, you need to click on general and select appearance. Expand that option and click on colors and fonts. From here, click on Java and click on java editor text font. Then, click on Edit.

32. It will allow you to change the font and font size. After changing it, click on Apply. 

33. Now the font size has been increased. I am going to write a very simple code. After writing the code, click on the Run Hello.java icon. It will run your code. The output will be displayed. 

These are the steps for creating the first java program in eclipse for java programming in Windows 11 Operating System.

The post How to Create First Java Program in Eclipse for Java Programming Windows 11 appeared first on CodeBind.com.

1. Open the settings app by searching for the settings app in the search bar. Click on apps and click on optional features.

2. Click on view features. Search for wireless display feature. Once the result appears, check that checkbox which is around 2.49 MB. Then, click on Next.

3. Now, click on Install. It will install the wireless display app.

4. Once the app is installed, you will be able to see that app. 

5. Now, search for connect app in the search bar. You will be able to see the connect app in the search result. Click on that app.

6. Once the app opens, click on the search icon and search for projection settings and click on that.

7. For the first option, select available anywhere. For the second option, set it to every time a connection is required. For the third option, set it to never. Once you have done these settings, close the window. 

8. On your android device, you will be able to see an option for casting. In my case, the mirror share option is available. Click on that option.

9. It will show you the devices on which you can cast. You need to search for the device that supports your android phone. 

10. As soon as you select the proper device, your Android screen will be displayed on your Windows 11 Operating System. 

11. To disconnect this, you need to click on that device in your android phone and click on disconnect. Or you can click on that device and forget that device as well. 

These are the steps for mirroring a phone on your Windows 11 PC. 

The post How to Mirror Phone on Windows 11 PC appeared first on CodeBind.com.

1. Open a web browser of your choice and search for xampp. Click on the first link.

2. Once the link opens, you will be able to see the version for Windows. Click on that version. It will start to download.

3. Once the download is complete, click on the exe file and minimize the browser. It will show a warning. Click on yes.

4. In the setup window, it will show a warning. Click on Ok.

5. In this window, click on Next.

6. XAMPP server comes with many tools. So, I am going to leave everything as default and click on Next.

7. This will be the location where it will be installed. If you want, you can change the location. I am going to leave it as default and click on Next.

8. In the language window, I am going to choose English and click on Next.

9. In this window, click on Next. 

10. I am going to select google Chrome for opening the file. Then, click on Ok.

11. It will take you to a web page. Minimize it and click on Next. It will start the installation process. 

12. Once the process is complete, it will show some warning. Click on allow access option. 

13. In the next window. Click on Finish. 

14. It will start the XAMPP server on your Windows 11 Operating System. Once it is opened, you will be able to see the icon in the taskbar by clicking on the arrow button. I am going to start the Apache server first. In front of apache, click on Start.

15. Once the apache server starts, it will turn to green color. You can also see the stop button. 

16. Now, go to a web browser of your choice and search for localhost, and press enter. If you see this kind of window which is provided in the image below, then the apache server is running successfully on your Windows 11 Operating System. If these features are not free to your Windows 11 Operating System by any chance then your apache server will show some error. 

17. To solve this error, go to your browser and search for localhost. If you see this kind of image which is provided below, then the apache server is running successfully. On this web page, you will be able to see PHPMyAdmin. Click on that. 

18. But for now it will not open that admin window. It will show some errors. This is because we have not started the MySQL server. You have to start MySQL just like how you did for apache. 

19. Once the MySQL server is running, you need to refresh the web page. It will show this kind of interface which is provided in the image below. From here, you can create databases, run SQL queries, and can do many things related to databases. 

20. If port 80 of the apache server is already occupied by some other server, then the apache server will show some error. XAMPP comes with Netstat which will tell you the ports that are already occupied by 80. It will show the list of all the ports. In this window, port 80 is occupied by the apache server. 

21. For changing the port, click on stop. Then, click on the config button. Here, you need to choose the first option. 

22. It will open a notepad file. You need to scroll down until you listen to 80. The default port is 80. You can change it to something else. I am going to change it to 8080. Then, save this file. You can close the file after saving it. Once you have done that, you can start your apache server. 

23. This time you can see that the port has been changed. 

24. Now, go to your browser and search for localhost. This time it will not open. This is because the server is running on a different port. So, if you change the port number you need to add a colon and type the port number, and press enter. This time it will open. Similarly, the earlier PHPMyAdmin will also not work. You need to use it from this localhost. 

These are the steps for installing XAMPP on your Windows 11 Operating System. 

The post How to Install XAMPP on Windows 11 appeared first on CodeBind.com.

1. Open a web browser of your choice and search for an SQL server. Click on the first link.

2. Once the link opens, scroll down and you can see two versions. I am going to download the express version. Click on the download now button. It will start to download.

3. Once the download is complete, click on the exe file and minimize the browser. The setup will start. In this window, click on the basic version.

4. In the license agreement window, accept the terms and conditions and click on Accept button. 

5. This will be the default location where it will be installed. If you want, you can change the location by clicking on the Browse option. I am going to leave it as default and click on the Install option. 

6. Once the installation is successful, it will display a message. To check whether your SQL server connection is working or not, you need to click on connect now button. 

7. If you see this kind of window which is provided in the image below without any error, then your SQL server is working properly. 

8. When you click on customize option, you can see all options related to Microsoft and its product update. 

9. Install SSMS button stands for SQL server management studio. When you click on that button, it will open a web page where you can download it. When you scroll down, you can see a free download link. Click on that link. It will start to download the exe file. 

10. Once the download is complete, click on the exe file and minimize the browser. It will show a warning. Click on Yes. 

11. This will be the location where it will be installed. If you want you can change the location by clicking on the Change option. I am going to leave it as default and click on the Install option. 

12. Once it is installed, you will see a message called setup completed. Click on the Close button. 

13. Click on the Windows start icon, and you will be able to see the SQL server profile. 

14. If you want to see all the tools related to SQL, you need to click on All apps. It will display all the apps related to SQL. 

15. It will start SQL server management studio. Now, the SQL server has been started. Click on Connect option. 

16. It will connect you to the SQL server. You can see the list of databases. 

17. When you click on the table, it will create a new table. 

These are the steps for downloading and installing Microsoft SQL server 2019 on your Windows 11 Operating System. 

The post How to Download and Install Microsoft SQL Server 2019 on Windows 11 appeared first on CodeBind.com.

1. Go to your favourite web browser, search for ‘zoom’ and press ENTER.

2. I would always choose the official website of applications that I wish to download. So, let’s click on the first link.

3. On clicking on the above link, it will take you to the website of zoom.us and click on the ‘Sign up its free button in the top right corner.

4. For signing up, it will ask you to enter the date of birth, and after that, click on ‘Continue.’

5. On the next page, give your email address and then click on Sign up

6. A confirmation mail will be sent to the email address that you’ve given. Go to your email and check for the confirmation link from zoom.

7. This confirmation link will take you to another web page to get more details from you. It will ask you to enter your first name, last name and so on.

8. Set a password for your zoom account.

9. After setting up the account, you can also do a test meeting.

10. For macOS, you need to download a package from zoom. The ‘zoom.pkg’ file will be automatically downloaded. 

11. After the download completes, double click to open the zoom.pkg file.

12. We have to do a few more steps for a complete installation.

13. Press ‘Continue’ in the above pop-up. The next screen allows you to change the default location for installation. If you do not want to change it, click on ‘install.’

14. Remember you gave a password for your zoom account? So, you have to enter this password to start the installation. In a minute or so, the installation will be complete.

Woohoo! Zoom installation on your macOS is now completed. You can start scheduling meetings now through zoom. I hope you find my blog helpful!

The post How to Install Zoom on a Mac appeared first on CodeBind.com.