A Linux distribution is an operating system that includes the Linux kernel for its kernel functionality. Although the name does not imply product distribution per se, a distro, if distributed on its own, is often obtained via a website intended specifically for the purpose. Distros have been designed for a wide variety of systems ranging from personal computers to servers and from embedded devices to supercomputers.
LILO is a boot loader for Linux and was the default boot loader for most Linux distributions. Unlike loadlin, it allowed booting Linux without having DOS on the computer. As of 2009, most distributions had switched to GRUB as the default boot loader. Further development of LILO was discontinued in December 2015 along with a request by Joachim Wiedorn for potential developers.
Akamai Technologies, Inc. is an American company specialized in content delivery network (CDN), cybersecurity, DDoS mitigation, and cloud services. It is headquartered in Cambridge, Massachusetts.
Red Hat Enterprise Linux (RHEL) is a commercial open-source Linux distribution developed by Red Hat for the commercial market. Red Hat Enterprise Linux is released in server versions for x86-64, Power ISA, ARM64, and IBM Z and a desktop version for x86-64. Fedora Linux and CentOS Stream serve as its upstream sources. All of Red Hat's official support and training, together with the Red Hat Certification Program, focuses on the Red Hat Enterprise Linux platform.
A light-weight Linux distribution is one that uses lower memory and/or has less processor-speed requirements than a more "feature-rich" Linux distribution. The lower demands on hardware ideally result in a more responsive machine, and/or allow devices with fewer system resources to be used productively. The lower memory and/or processor-speed requirements are achieved by avoiding software bloat, i.e. by leaving out features that are perceived to have little or no practical use or advantage, or for which there is no or low demand.
Bdale Garbee is an American computer specialist who works with Linux, particularly Debian. He is also an amateur radio hobbyist (KB0G), and a member of AMSAT, Tucson Amateur Packet Radio, and the American Radio Relay League. As of 2023 he is the President of Amateur Radio Digital Communications.
SquirrelMail is a project that aims to provide both a web-based email client and a proxy server for the IMAP protocol.
Technical variations of Linux distributions include support for different hardware devices and systems or software package configurations. Organizational differences may be motivated by historical reasons. Other criteria include security, including how quickly security upgrades are available; ease of package management; and number of packages available.
TCP/IP stack fingerprinting is the remote detection of the characteristics of a TCP/IP stack implementation. The combination of parameters may then be used to infer the remote machine's operating system, or incorporated into a device fingerprint.
Upstart is a discontinued event-based replacement for the traditional init daemon—the method by which several Unix-like computer operating systems perform tasks when the computer is started. It was written by Scott James Remnant, a former employee of Canonical Ltd. In 2014, Upstart was placed in maintenance mode, and other init daemons, such as systemd, were recommended in place of Upstart. Ubuntu moved away from Upstart with the release of version 15.04 in favor of migrating to systemd. As of June 2024, there have been no updates released for Upstart since September 2014.
GNU variants are operating systems based upon the GNU operating system. According to the GNU project and others, these also include most operating systems using the Linux kernel and a few others using BSD-based kernels.
Fail2Ban is an intrusion prevention software framework. Written in the Python programming language, it is designed to prevent brute-force attacks. It is able to run on POSIX systems that have an interface to a packet-control system or firewall installed locally, such as iptables or TCP Wrapper.
RPM Package Manager (RPM) is a free and open-source package management system. The name RPM refers to the .rpm file format and the package manager program itself. RPM was intended primarily for Linux distributions; the file format is the baseline package format of the Linux Standard Base.
The FreePBX Distro was a freeware unified communications software system that consisted of a graphical user interface (GUI) for configuring, controlling and managing Asterisk PBX software. The FreePBX Distro included packages that offer VoIP, PBX, Fax, IVR, voice-mail and email functions.
HandyLinux is a simplified Linux operating system developed in France, derived from the Debian stable branch. It was designed to be easily accessible and downloadable, so that it could be used by people with very little computer experience and on a range of older hardware that was no longer supported by the latest versions of proprietary operating systems. It was particularly aimed at older people with dated hardware who do not need nor possess the skill to use many features afforded by state-of-the-art operating systems.
Parrot OS is a Linux distribution based on Debian with a focus on security, privacy, and development.
chrony is an implementation of the Network Time Protocol (NTP). It is an alternative to ntpd, a reference implementation of NTP. It runs on Unix-like operating systems and is released under the GNU GPL v2. It is the default NTP client and server in Red Hat Enterprise Linux 8 and SUSE Linux Enterprise Server 15, and available in many Linux distributions.
