On Fri, Oct 23, 2020 at 1:29 PM negin jafari wrote: > I am a university Student trying to learn a lot of things about Debian.
As a university student, you might be interested in participating in Debian through the Google Summer of Code or Outreachy paid mentorship programs. https://www.outreachy.org/ https://summerofcode.withgoogle.com/ https://wiki.debian.org/Outreachy https://wiki.debian.org/SummerOfCode https://wiki.debian.org/Mentoring The intro section on our website might be helpful with understanding Debian: https://www.debian.org/intro/ Our page of diagrams, in particular the "Understanding Debian" infographic, will probably also be useful to you for understanding Debian. https://wiki.debian.org/Diagrams http://cfnarede.com.br/infographic-of-debian/ https://github.com/filhocf/infographics/raw/master/debian/infographic_debian.svg While you are learning about Debian, if you come across unfamiliar terms, our Glossary may be helpful to you: https://wiki.debian.org/Glossary Other folks have already answered your questions, but I'll give another perspective on them. > Is there only one repository for Debian or are there more ? What are their > links? There is one main repository that contains most of our packages, split up into 3 components (main, contrib, non-free) and multiple releases (experimental, unstable, testing, stable, oldstable). In addition to our main repository, we split out debug symbols packages into a separate repository, we have a separate repository for security updates and we have a separate repository for unofficial ports. All these repositories are available from the Debian package CDN. The main repository is also synced to many mirror servers and the unofficial ports are synced to a couple of mirrors. https://www.debian.org/intro/free https://www.debian.org/releases/ https://wiki.debian.org/AutomaticDebugPackages https://www.debian.org/security/ https://www.debian.org/ports/ https://www.ports.debian.org/ https://deb.debian.org/ https://www.debian.org/mirror/ https://www.ports.debian.org/mirrors > Is there any security repository or source repositories ? What are their > links? In addition to the security/source repositories already linked by others, we have a database of security information, where you can look up security issues by CVE number, Debian source package name or Debian release name. https://security-tracker.debian.org/ The Debian package tracker service might also be useful to you: https://tracker.debian.org/ -- bye, pabs https://wiki.debian.org/PaulWise