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Mac OS X is an operating system from Apple Inc. It was the successor to Mac OS 9 and here the 'X' means 10. Mac OS X is based upon the NeXTSTEP and OpenStep OSes developed in the 1980s and 1990s by NeXT Inc., which Apple purchased in 1996.
2444 questions
BIND is a free, open source software implementation of the Domain Name System (DNS) protocols. The name BIND stands for "Berkeley Internet Name Domain", because the software originated in the early 1980s at the University of California at Berkeley. BIND is currently maintained and developed by the Internet Systems Consortium, a non-profit public benefit corporation with a mission to support a free and open internet.
2335 questions
HTTP or HTML mechanisms used for redirecting browsers to where the actual content is located
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A process of proving that an entity (commonly a user or organization) is who they claim to be, or who they were previously identified as being. Authentication does not guarantee that particular entity's identity absolutely, it just proves that they are the same agent that has previously successfully asserted their identity. There are three factors (types) of authentication, and a particular authentication process may combine two or more different factors.
2267 questions
HTTP stands for Hyper Text Transfer Protocol and is the protocol used to transfer information around the World Wide Web.
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mod_rewrite is an Apache module that allows for server-side manipulation of requested URLs.
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Apache Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies released under the Apache License version 2. The Tomcat project started at Sun Microsystems and was donated by Sun to the Apache Software Foundation in 1999.
2235 questions
PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites.
2190 questions
DHCP stands for Dynamic Host Configuration Protocol and is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol.
2161 questions
URL Rewriting maps an incoming URL to a modified URL, so that the request is processes as if the original request was made to the modified URL. This is often used to provide more search engine friendly URLs.
2149 questions
HAProxy is an open source, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for web sites crawling under very high loads while needing persistence or Layer7 processing.
2148 questions
IIS7 is the version of Microsoft's web server software released with Windows Server 2008.
2136 questions
Exchange 2010 was a Microsoft collaboration server product offering e-mail, calendar, and other functions. It was released to general availability on November 9, 2009, and reached End Of Life (EOL) on October 13, 2020.
2107 questions
In computer networking, network address translation (NAT) is the process of modifying network address information in datagram (IP) packet headers while in transit across a traffic routing device for the purpose of remapping one IP address space into another.
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A device that connects two or more networks and is capable of forwarding data packets to a destination based on information contained within a packet and internal routing tables.
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Synonym for: RAM - Acronym for: Random Access Memory, a type of computer data storage.
2052 questions
A file system (or filesystem) is a means to organize data expected to be retained after a program terminates by providing procedures to store, retrieve and update data, as well as manage the available space on the device(s) which contain it.
2018 questions
PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness. It runs on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris, Tru64), and Windows.
1997 questions
Primarily questions about disk storage, sometimes questions about application storage or cloud storage. Always questions about storing data.
1991 questions
Cron is a time-based job scheduler in Unix-like computer operating systems. Cron enables users to schedule jobs (commands or shell scripts) to run periodically at certain times or dates.
1977 questions
Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs.
1962 questions
Network File System (NFS) is a network file system protocol originally developed by Sun Micro systems in 1984, allowing a user on a client computer to access files over a network in a manner similar to how local storage is accessed. NFS, like many other protocols, builds on the Open Network Computing Remote Procedure Call (ONC RPC) system. The Network File System is an open standard defined in RFCs.
1961 questions
VPS is the acronym for `Virtual Private Server`. Hosting companies provide customers the ability to rent computing resources, which are used to create and run virtual machines that are controlled by the customer, but run on the hosting company's hardware. Such a VM is known as a VPS.
1907 questions
WordPress is an open-source blogging & CMS platform. Questions about using WordPress, developing plugins and themes for WordPress, etc., may be welcome at our sister site wordpress.stackexchange.com
1901 questions
Samba is a free software re-implementation, originally developed by Andrew Tridgell, of the SMB/CIFS networking protocol.
1893 questions
Programming language and runtime environment that allows compiled Java programs to run unchanged on most hardware and software platforms
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A form of computer programming that — in the context of system administration — lends it self well to automating tasks.
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IPv6 is the successor to IPv4. Rather than 2^32 addresses (like IPv4), it has 2^128, which is 340,282,366,920,938,463,463,374,607,431,768,211,456 unique addresses (34 undecillion). IPv6 addressing is quite different to IPv4 and is not backwards compatible, but protocols that sit on top (HTTP, SSH, etc) remain unchanged.
1840 questions
The Apache HTTPd Server. When asking questions about virtualhosts, please include the output of the following command: "apache2ctl -S" (or "httpd -S" depending on your OS)
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Windows Server 2016 is a server Operating System from Microsoft, released in 2016, and will reach end of life on January 12, 2027.
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Ansible is an open-source software platform for configuring and managing computers. It combines multi-node software deployment, ad-hoc task execution, and configuration management.
1814 questions
A version of Microsoft's database server, released in August 2008. This is different than SQL Server 2008R2.
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Puppet is a configuration management tool (Unix & Windows) with its own Domain Specific Language.
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CentOS was an Linux distribution standing for "Community ENTerprise Operating System" based on "Red Hat Enterprise Linux" (RHEL). The "CentOS6" tag refers to versions 6.x of CentOS. CentOS 6 was released on November 27, 2011 and reached End Of Life on November 30, 2020.
1781 questions
Python is a dynamically and strongly typed programming language that encourages readability.
1775 questions
An IMAP and POP3 email server. When asking about Dovecot problems, please include relevant maillog lines and output of the following command: `doveconf -n`
1767 questions