difference redhat sv debian

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Main Difference is Ubuntu is based on Debian system. It uses .deb packages. While redhat uses it own package system .rpm (red hat package manager ).
Redhat is free but it is charged for support (updates), when Ubuntu is totally free with support for desktop users only professional support is chargeable.

1. RedHat is Most Widely used Distribution for servers.
Debian is widely used Distribution next to RedHat.
2. RedHat is Commercial Linux Distribution.
Debian is Non-commercial Linux Distribution.
3. RedHat contains roughly 3000 packages.
Latest Debian Release (Wheezy) contains well over 38000 packages.
It means Debian contains nearly 80% more packages than RedHat and this is the reason Debian contains packages like openoffice, Transmission bittorrent client, mp3 codecs, etc which a RedHat like distribution lacks and is required to be installed manually or from 3rd party repository.
4. RedHat bug fixing takes considerable time, since it is controlled by a small group of people-RedHat Employee.
Bug fixing in Debian is very much quick as people all around the globe from Debian community, working from different geographical location simultaneously fixes it.
5. RedHat don’t release package updates, till next release, means you have to wait for the next release be it minor.
Debian community believes – software is a continuous evolution process, hence updates are released on Daily Basis.
6. RedHat releases major updates every six month and nothing in between. Installing new updates in RedHatbased System is a tuff task, where you need to reinstall everything.
Installing the Debian updates being released everyday is a pretty easy task barely 3-4 clicks away.
7. RedHat is rock solid stable distribution released after continuous testing.
Debian contains packages from stable, unstable and testing Repository. Stable contains rock solid stablerelease packages. Unstable contains more updated packages ready to be pushed into stable repository. Testing contains packages already tested and marked safe.
8. RedHat package manager Yum is less mature and is not able to solve dependencies automatically, many a times.
Debian package manager Apt is very mature and solve dependency automatically, most of the times.
9. Installing VLC in RedHat Beta Release 6.1, is a very difficult task which requires installing tens of packages manually.
In Debian it is as simple as apt-get install vlc*
10. Debian is intelligent in differentiating Configuration files with other files. This makes upgradation easy. The virgin (untouched) configuration files are updated automatically and the one modified, requires users interaction as the package manager ask what to do, but this is not the case with RedHat.
11. RedHat uses the rpm packages.
Debian uses the deb packages.
12. RedHat uses the RPM package manager.
Debian uses the dpkg package manager.
13. RedHat uses the yum dependency resolver.
Debian uses the apt-get dependency resolver.
14. Fedora uses single global repository which contains free software’s only.
Debian contains contribute and Non-free repository along with free software repository.
15. According to Wikipedia, Ubuntu is a based on the unstable branch of Debian but Fedora is not a derivative and has a more direct relationship and stays close to many upstream projects.
16. Fedora uses ‘su‘ whereas Ubuntu uses ‘sudo‘ by default.
17. Fedora ships with SELinux installed and enabled by default along with some other ‘hardening’ software to make things more secure by default, unlike Debian.
18. Debian is a community based distribution, unlike RedHat.

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