Deal on HP-Compaq P4 Desktop PC With Ubuntu Linux installed $139
Hewlett-Packard target their line of business desktop computers for use in the corporate, government and education markets. HP operate their business desktops on minimum 12-month product cycle and directly compete with Dell Optiplex, Acer Veriton and Lenovo ThinkCentre. HP's market share for their business line of desktops in 2010 was estimated at 21%, an increase of 50% when compared with 2004 and with a sales increase of 27% through the period 2009-2010 This article is about the operating system. For the kernel, see Linux kernel. For other uses, see Linux (disambiguation). Page protected with pending changes level 1 Linux Tux Tux the penguin, mascot of Linux[1] Developer Community Written in Various (Notably C and Assembly) OS family Unix-like Working state Current Source model Mainly open source, closed source also available Initial release 1991; 23 years ago Latest release 3.18 (7 December 2014; 5 days ago) [±][2] Marketing target Personal computers, mobile devices, embedded devices, servers, mainframes, supercomputers Available in Multilingual Platforms Alpha, ARC, ARM, AVR32, Blackfin, C6x, ETRAX CRIS, FR-V, H8/300, Hexagon, Itanium, M32R, m68k, META, Microblaze, MIPS, MN103, OpenRISC, PA-RISC, PowerPC, s390, S+core, SuperH, SPARC, TILE64, Unicore32, x86, Xtensa Kernel type Monolithic (Linux kernel) Userland Various Default user interface Many License GNU GPL[3] and other free and open source licenses; "Linux" trademark is owned by Linus Torvalds[4] and administered by the Linux Mark Institute Linux (Listeni/ˈlɪnəks/ lin-uks[5][6] or, less frequently used, /ˈlaɪnəks/ lyn-uks)[6][7] is a Unix-like and mostly POSIX-compliant[8] computer operating system assembled under the model of free and open-source software development and distribution. The defining component of Linux is the Linux kernel,[9] an operating system kernel first released on 5 October 1991 by Linus Torvalds.[10][11] The Free Software Foundation uses the name GNU/Linux, which has led to some controversy