資料介紹

CentOS（Community ENTerprise Operating System）是Linux發行版之一，它是來自於Red Hat Enterprise Linux依照開放源代碼規定釋出的源代碼所編譯而成。由於出自同樣的源代碼，因此有些要求高度穩定性的服務器以CentOS替代商業版的Red Hat Enterprise Linux使用。兩者的不同，在於CentOS並不包含封閉源代碼軟件。

The CentOS team is pleased to announce the availability of CentOS 5.6. Major changes in CentOS 5.6 compared to CentOS 5.5 include:

ext4 is now a fully supported file system
libvirt was updated to 0.8.2
bind was updated to 9.7 and supports NSEC3 now.
ebtables was added
php53 is available as a php replacement.
System Security Services Daemon (SSSD) has been added.

Other upgrades include newer version of several wireless drivers, Samba3x, ghostscript, LVM, mod_nss, subversion and gcc, plus others.