Ubuntu apt-get without CD Rom

In Linux systems such as Ubuntu, apt-get is a command-line tool used for managing software packages. By default, apt-get sources packages from the CD-ROM on the server that the OS was installed from. However, sometimes you may need to install or update packages without having the CD-ROM available. In this tutorial, we will demonstrate how to use apt-get without a CD-ROM.

Step 1: Edit the sources.list file

The sources.list file contains a list of URLs that apt-get uses to download package files. You need to edit this file to remove the CD-ROM as the source and replace it with the online sources.

To edit the sources.list file, run the following command:

sudo nano /etc/apt/sources.list

This will open the file in the nano text editor. Remove the line that contains the CD-ROM and replace it with the URLs of the online repositories. Then, save and close the file.

Step 2: Update the package information

After editing the sources.list file, update the package information using the following command:

sudo apt-get update

This will refresh the list of available packages from the online repositories.

Step 3: Install or update packages

Once the package information has been updated, you can now install or update packages using the following command:

sudo apt-get install package-name

Replace "package-name" with the name of the package you want to install or update.

Conclusion

By editing the sources.list file and updating the package information, you can use apt-get to manage software packages without a CD-ROM. This is especially useful if your system does not have a CD-ROM drive or if you are working on a remote server.