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class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">American computer programmer (born 1958)</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">This article is about the programmer. For the businessman and pilot, see <a href="/wiki/Kenneth_Arnold" title="Kenneth Arnold">Kenneth Arnold</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox biography vcard"><tbody><tr><th colspan="2" class="infobox-above" style="font-size:125%;"><div class="fn">Ken Arnold</div></th></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Ken_Arnold_-_25_december_2006.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Ken_Arnold_-_25_december_2006.jpg/200px-Ken_Arnold_-_25_december_2006.jpg" decoding="async" width="200" height="150" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Ken_Arnold_-_25_december_2006.jpg/300px-Ken_Arnold_-_25_december_2006.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/1/14/Ken_Arnold_-_25_december_2006.jpg 2x" data-file-width="320" data-file-height="240" /></a></span><div class="infobox-caption">Ken Arnold in December 25, 2006</div></td></tr><tr><th scope="row" class="infobox-label">Born</th><td class="infobox-data"><div style="display:inline" class="nickname">Kenneth Cutts Richard Cabot Arnold</div><br /><span style="display:none"> (<span class="bday">1958-06-13</span>) </span>13 June 1958<span class="noprint ForceAgeToShow"> (age 66)</span></td></tr><tr><th scope="row" class="infobox-label">Occupation</th><td class="infobox-data role"><a href="/wiki/Programmer" title="Programmer">Programmer</a></td></tr><tr><th scope="row" class="infobox-label">Known for</th><td class="infobox-data"><a href="/wiki/Rogue_(video_game)" title="Rogue (video game)">Rogue</a>, contributions to <a href="/wiki/Berkeley_Software_Distribution" title="Berkeley Software Distribution">BSD UNIX</a></td></tr></tbody></table> <p><b>Kenneth Cutts Richard Cabot Arnold</b> (born 1958) is an American <a href="/wiki/Computer_programmer" class="mw-redirect" title="Computer programmer">computer programmer</a> well known as one of the developers of the 1980s <a href="/wiki/Dungeon_crawl" title="Dungeon crawl">dungeon-crawling</a> <a href="/wiki/Video_game" title="Video game">video game</a> <i><a href="/wiki/Rogue_(video_game)" title="Rogue (video game)">Rogue</a></i>,<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> for his contributions to the original Berkeley (<a href="/wiki/Berkeley_System_Distribution" class="mw-redirect" title="Berkeley System Distribution">BSD</a>) distribution of <a href="/wiki/Unix" title="Unix">Unix</a>, for his books and articles about <a href="/wiki/C_(programming_language)" title="C (programming language)">C</a> and <a href="/wiki/C%2B%2B" title="C++">C++</a> (e.g. his 1980s–1990s <i><a href="/wiki/Unix_Review" class="mw-redirect" title="Unix Review">Unix Review</a></i> column, "<i>The C Advisor</i>"), and his high-profile work on the <a href="/wiki/Java_platform" class="mw-redirect" title="Java platform">Java platform</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="At_Berkeley">At Berkeley</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ken_Arnold&action=edit&section=1" title="Edit section: At Berkeley"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Arnold attended the <a href="/wiki/University_of_California,_Berkeley" title="University of California, Berkeley">University of California, Berkeley</a>, after having worked at <a href="/wiki/Lawrence_Berkeley_National_Laboratory" title="Lawrence Berkeley National Laboratory">Lawrence Berkeley National Laboratory</a> computer labs for a year, receiving his <a href="/wiki/A.B." class="mw-redirect" title="A.B.">A.B.</a> in <a href="/wiki/Computer_science" title="Computer science">computer science</a> in 1985. At Berkeley, he was president of the Berkeley Computer Club (later known as the Computer Science Undergraduates Association), and made many contributions to the 2BSD and 4BSD <a href="/wiki/Berkeley_Unix" class="mw-redirect" title="Berkeley Unix">Berkeley Unix</a> distributions, including: </p> <ul><li><a href="/wiki/Curses_(programming_library)" title="Curses (programming library)">curses</a> and <a href="/wiki/Termcap" title="Termcap">termcap</a>: a hardware-independent library for controlling cursor movement, screen editing, and window creation on ASCII display terminals, based on termcap (based on <a href="/wiki/Bill_Joy" title="Bill Joy">Bill Joy</a>'s <a href="/wiki/Vi_(text_editor)" title="Vi (text editor)">vi</a> screen control code). Curses was a landmark display <a href="/wiki/Library_(software)" class="mw-redirect" title="Library (software)">library</a> that made it possible for a vast number of new applications to create full-screen user interfaces that were <a href="/wiki/Portability_(software)" class="mw-redirect" title="Portability (software)">portable</a> between different brands of display terminal.<sup id="cite_ref-Arnold1977_2-0" class="reference"><a href="#cite_note-Arnold1977-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></li> <li><i><a href="/wiki/Rogue_(video_game)" title="Rogue (video game)">Rogue</a></i>: Arnold, Michael Toy, and <a href="/wiki/Glenn_Wichman" title="Glenn Wichman">Glenn Wichman</a> co-wrote <i>Rogue</i>, a full-screen <a href="/wiki/Role-playing_video_game" title="Role-playing video game">role-playing video game</a> that presented a then-novel view of the "dungeon" from above (rather than via textual description as in the older <i><a href="/wiki/Zork" title="Zork">Zork</a></i> and <i><a href="/wiki/Colossal_Cave_Adventure" title="Colossal Cave Adventure">Adventure</a></i>). It spawned an entire genre of "<a href="/wiki/Roguelike" title="Roguelike">roguelike</a>" games.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Fortune_(program)" class="mw-redirect" title="Fortune (program)">fortune</a>: a fortune cookie program. Although Arnold's quote-displaying program was not the first in history, as the BSD standard it became by far the most widely used, and its database of quotes was voluminous. It also standardized a <a href="/wiki/Plain_text" title="Plain text">plain-text</a> <a href="/wiki/File_format" title="File format">file format</a> that was philosophically aligned with Unix and thus became widely used both for other fortune programs as well as non-fortune purposes.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Ctags" title="Ctags">ctags</a>: a program for generating cross-references in computer source code.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Selected_bibliography">Selected bibliography</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ken_Arnold&action=edit&section=2" title="Edit section: Selected bibliography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>JavaSpaces. Principles, Patterns, and Practice; Eric Freeman, Susanne Hupfer, Ken Arnold; <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-201-30955-6" title="Special:BookSources/0-201-30955-6">0-201-30955-6</a></li> <li>The Java Programming Language; 4th Edition; Ken Arnold, <a href="/wiki/James_Gosling" title="James Gosling">James Gosling</a>, David Holmes; <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-321-34980-6" title="Special:BookSources/0-321-34980-6">0-321-34980-6</a> <ul><li><a rel="nofollow" class="external text" href="http://www.informit.com/articles/article.aspx?p=417997">Sample chapter: A Taste of Java's I/O Package: Streams, Files, and So Much More</a></li></ul></li> <li>The Jini(TM) Specification, 2nd Edition; Ken Arnold, Jim Waldo and the rest of the Jini technology team. Part of the official Jini Technology Series, published by Addison Wesley.</li> <li><a rel="nofollow" class="external text" href="http://www.verysecurelinux.com/85jan.html">"Fear and Loathing on the UNIX Trail -- Confessions of a Berkeley system mole."; Doug Merritt with Ken Arnold and Bob Toxen; Unix Review, Jan 1985</a></li> <li>"Rogue: Where It has Been, Why It Was There, And Why It Shouldn't Have Been There In The First Place"; USENIX Conference Proceedings; Boston, July 1982, p. 139 ff; Ken C.R.C. Arnold, Michael C. Toy<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ken_Arnold&action=edit&section=3" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/History_of_video_games" title="History of video games">History of video games</a></li> <li><i><a href="/wiki/The_Art_of_Unix_Programming" title="The Art of Unix Programming">The Art of Unix Programming</a></i></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ken_Arnold&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://web.archive.org/web/19980625212119/http://www.wichman.org/roguehistory.html">A Brief History of "Rogue"</a><sup><a href="/wiki/Template:Usurped/doc" title="Template:Usurped/doc">[usurped]</a></sup>.</span> </li> <li id="cite_note-Arnold1977-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-Arnold1977_2-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFArnold1977" class="citation cs2">Arnold, K. C. R. C. (1977), <i>Screen Updating and Cursor Movement Optimization: A Library Package.</i>, University of California, Berkeley</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Screen+Updating+and+Cursor+Movement+Optimization%3A+A+Library+Package.&rft.pub=University+of+California%2C+Berkeley&rft.date=1977&rft.aulast=Arnold&rft.aufirst=K.+C.+R.+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKen+Arnold" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKenneth_C._R._C._ArnoldElan_Amir1992" class="citation web cs1">Kenneth C. R. C. Arnold; Elan Amir (December 1992). <a rel="nofollow" class="external text" href="http://www.mirbsd.org/cman/manPSD/19.curses.htm">"Screen Updating and Cursor Movement Optimization: A Library Package"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Screen+Updating+and+Cursor+Movement+Optimization%3A+A+Library+Package&rft.date=1992-12&rft.au=Kenneth+C.+R.+C.+Arnold&rft.au=Elan+Amir&rft_id=http%3A%2F%2Fwww.mirbsd.org%2Fcman%2FmanPSD%2F19.curses.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKen+Arnold" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text">Note: it was a different Ken Arnold ("Ken W. Arnold") who contributed' to the <i><a href="/wiki/Ultima_(series)" title="Ultima (series)">Ultima</a></i> game series (see <a href="/wiki/Ultima_I:_The_First_Age_of_Darkness#Development_and_release" title="Ultima I: The First Age of Darkness">Ultima I: The First Age of Darkness#Development and release</a>).<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (October 2014)">citation needed</span></a></i>]</sup></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20100825205302/http://www.faqs.org/docs/artu/ch05s02.html">"Data File Metaformats"</a>. Faqs.org. Archived from <a rel="nofollow" class="external text" href="http://www.faqs.org/docs/artu/ch05s02.html">the original</a> on 2010-08-25<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-08-22</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Data+File+Metaformats&rft.pub=Faqs.org&rft_id=http%3A%2F%2Fwww.faqs.org%2Fdocs%2Fartu%2Fch05s02.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKen+Arnold" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNemeth1982" class="citation web cs1">Nemeth, Alan G. (June 5, 1982). <a rel="nofollow" class="external text" href="http://archive-cr.com/page/6218632/2015-07-07/http://www.informatica.co.cr/unix/research/1982/0706.htm">"Technical Program for Boston Meeting"</a>. <i>archive-cr.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2016-05-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=archive-cr.com&rft.atitle=Technical+Program+for+Boston+Meeting&rft.date=1982-06-05&rft.aulast=Nemeth&rft.aufirst=Alan+G.&rft_id=http%3A%2F%2Farchive-cr.com%2Fpage%2F6218632%2F2015-07-07%2Fhttp%3A%2F%2Fwww.informatica.co.cr%2Funix%2Fresearch%2F1982%2F0706.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKen+Arnold" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ken_Arnold&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.artima.com/weblogs/index.jsp?blogger=arnold">Ken Arnold's (low volume) Artima log</a></li> <li><a rel="nofollow" class="external text" href="http://weblogs.java.net/blog/arnold/">Ken Arnold's (low volume) java.net blog</a></li> <li><a rel="nofollow" class="external text" href="http://www.rocketaware.com/uint/curses/">curses</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/19980625212119/http://www.wichman.org/roguehistory.html">Wichman's view of Rogue history</a><sup><a href="/wiki/Template:Usurped/doc" title="Template:Usurped/doc">[usurped]</a></sup></li> <li><a rel="nofollow" class="external text" href="http://napkinlaf.sourceforge.net/">Napkin Look and Feel for Swing</a> — a GUI that gives the look and feel of a sketch on a napkin</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist 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