CentOS is an enterprise Linux distribution based on the sources from Red Hat Enterprise Linux. CentOS conforms with Red Hat's redistribution policy and aims to be 100% binary compatible. Each CentOS version is supported for 7 years (by means of security updates). A new CentOS version is released every 2 years and each CentOS version is regularly updated (every 6 months) to support newer hardware. Currently, there are 4 different supported CentOS releases: CentOS-5 is based on Red Hat Enterprise Linux 5, CentOS-4 is based on RHEL4, CentOS-3 is based on RHEL3, and CentOS-2 is based on RHAS2.1.
Dconf is a tool to collect a system's hardware and software configuration. It allows you to take your system configuration with you and compare systems (like nodes in a cluster) to troubleshoot hardware or software problems. It can also be configured to send out configuration changes at given intervals to a group of people, or store a new snapshot when system changes happen.
dstat is a versatile replacement for vmstat, iostat, netstat, nfsstat, and ifstat. It includes various counters (in separate plugins) and allows you to select and view all of your system resources instantly; you can, for example, compare disk usage in combination with interrupts from your IDE controller, or compare the network bandwidth numbers directly with the disk throughput (in the same interval).
Dwall is an all-purpose firewall tool to generate an iptables firewall out of a simple configuration. It contains about 80 predefined services and comes with a simple 3 zone firewall example. It is designed to be easy to configure and manage without being limited to a specific network setup. It can handle as many interfaces as desired and allows you to create firewall rules that are portable between several firewalls.
footprint is a tool that makes it easier to create and manage kickstart files. It allows you to define systems, create profiles for systems, and macros per distribution. It can create kickstart files on the fly, make custom initrd (ramdisks), create custom bootfloppies, and can manage your DHCP and PXE configuration.
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Re: it's a shame - package management Install rpm2cpio.
Not one single reason The reason that Linux will succeed is not a single one. It's because all sorts of people want it for all sorts of different things. Some like to have Windows applications ...