It is a package manager that is used for managing the installation, updating, and removal of software packages in a Debian based Linux system. It is a package manager that is used for managing the installation, updating and removal of software packages in a Debian Based Linux System. Some of these are. I have already written another article explaining all about packages and package managers in detail that you can find in the link below.
Both these commands are just different methods of invoking our package manager dpkg. You can use both to do the same thing in most cases. An example is the addition of the progress bar while we install packages on the command line as shown in the screenshot below. Some examples include. I leave it unto you to read the man pages and try out these commands for yourself and play with them!
It is recommended to use apt commands on the terminal and apt-get on the bash scripts. Is it just ftp s or http s? Is the machine that is hosting the repository running special software like gitlab for a git repository , or is it just some structured file system? Improve this question. Chapter 5: debian-handbook. Add a comment. Active Oldest Votes. As to your questions, in order: The repository contains "list" files. It's just a structured filesystem. A quick, high-level overview of how apt-get interacts with a package source: You configure which sources to look at in your sources.
Improve this answer. Beat me to it ;-. Regarding 2, debian. Thanks — user Regarding 5, what is the point of wiki. Creating packages is best done on Debian. But your web server can be anything.
Typically, you create the package on your build host, possibly even the entire repository structure, then upload it to the webserver. Those tools help you build the structured filesystem, including all the lists files, signed releases files, etc. They are also probably easiest to run on Debian. FaheemMitha Packages of some compression, modern apt prefers. These are usually shell scripts, but there's no hard rule.
For example:. In short : apt-get install does everything that is needed that your system can successfully execute the new installed software application. From the manpage :. All packages required by the package s specified for installation will also be retrieved and installed. Those packages are stored on a repository in the network. They will be downloaded from a web- or a ftp-server. They are specified in the so called sources. From then on they get installed one by one procedurally.
The first ones are the ones, that have no further dependencies; so no other package has to be installed for them. Through that, other packages that had dependencies previously have now no dependencies anymore. The system keeps doing that process over and over until the specified packages are installed. In Debian-based Linux distributions, as Ubuntu, those packages are in a specified standardized format called: deb - The Debian binary package format.
Such a package contains the files to be installed on the system. Also they contain a control file. That file contains scripts that the packaging system should execute in a specific situation; the so called maintainer scripts.
Those scripts are split in:. For the actual under-the-hood stuff, you'll need to grab the Apt source. Fairly simple if you have source repositories enabled:. It's a pain to read through but most of apt-get 's actions are spelled out quite extensively in there. You have to remember that apt-get is merely one side of the coin. We will understand how one can use dpkg and apt-get to install packages and learn where the packages are installed in the following sections.
By this point, we all know that apt-get can be used to install, remove, and upgrade Linux packages. We also learned that it serves as the front-end for dpkg, the native package management utility for Ubuntu and Debian.
But how does it really work? And what happens to the files that are installed by it? Let us start by installing a test package called ack. For this purpose, we will use apt-get, and later we will trace the files installed by it to their specific locations. The next step is to make sure you have the multiverse repository added.
Without that, you cannot install ack. You are, obviously, free to use any other package of your choice. Note that instead of ack-grep, ack was installed. This is why we will be modifying the next commands we execute. The installation will be complete within a few seconds.
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