{"id":380,"date":"2026-01-06T04:23:02","date_gmt":"2026-01-06T04:23:02","guid":{"rendered":"https:\/\/mitalgoswami.in\/?p=380"},"modified":"2026-01-22T02:40:53","modified_gmt":"2026-01-22T02:40:53","slug":"history-of-unix","status":"publish","type":"post","link":"https:\/\/mitalgoswami.in\/?p=380","title":{"rendered":"History of Unix"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">History of UNIX (Short &amp; Clear)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">&#x1f539; Origins (1960s\u20131970s)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UNIX<\/strong> was created in <strong>1969<\/strong> at <strong>Bell Labs<\/strong> by <strong>Ken Thompson<\/strong> and <strong>Dennis Ritchie<\/strong>.<\/li>\n\n\n\n<li>It evolved from an earlier project called <strong>Multics<\/strong>, (\u00a0<mark><strong><a href=\"https:\/\/www.google.com\/search?q=Multiplexed+Information+and+Computing+Service&amp;oq=fullform+of+multics&amp;gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIICAEQABgWGB4yCAgCEAAYFhgeMg0IAxAAGIYDGIAEGIoFMg0IBBAAGIYDGIAEGIoFMgoIBRAAGIAEGKIEMgoIBhAAGIAEGKIEMgoIBxAAGKIEGIkFMgoICBAAGIAEGKIE0gEJNDQxNmowajE1qAIIsAIB8QXB5mDP69wHnA&amp;sourceid=chrome&amp;ie=UTF-8&amp;mstk=AUtExfCiu4JKR2f5X2DEu5weHMTCL5L_WMS4pvUJFruYFvMFvWdvB1LBlu0QCyX2RLBfMnS0NPBL50SUX6ipHiEKo13gn-4bi2lfCHgznBx6zkUrMxh8Ua_37f-t4iurRpfd9XDRoCat0fRTrGK2Uy0MFM5n3EDqbKGWi4IP-tI64U_FqsU&amp;csui=3&amp;ved=2ahUKEwj7q5upj56SAxViRmwGHUHcJGEQgK4QegQIARAC\">Multiplexed Information and Computing Service<\/a><\/strong><\/mark>)which was complex and costly.<\/li>\n\n\n\n<li>The first UNIX ran on a <strong>PDP-7<\/strong> computer and was designed to be <strong>simple, powerful, and multi-user<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">&#x1f539; C Language &amp; Portability (1973)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In <strong>1973<\/strong>, UNIX was rewritten in the <strong>C programming language<\/strong>.<\/li>\n\n\n\n<li>This made UNIX <strong>portable<\/strong> (able to run on different hardware), a revolutionary idea at the time.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">&#x1f539; Academic Spread (1970s\u20131980s)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bell Labs licensed UNIX to <strong>universities<\/strong> at low cost.<\/li>\n\n\n\n<li>Universities like <strong>UC Berkeley<\/strong> developed <strong>BSD (Berkeley Software Distribution)<\/strong>.<\/li>\n\n\n\n<li>UNIX became popular in <strong>research, education, and enterprise<\/strong> environments.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">&#x1f539; Commercial UNIX (1980s\u20131990s)<\/h3>\n\n\n\n<p>Many companies released their own UNIX versions:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>AT&amp;T UNIX<\/strong><\/li>\n\n\n\n<li><strong>Sun Solaris<\/strong><\/li>\n\n\n\n<li><strong>IBM AIX<\/strong><\/li>\n\n\n\n<li><strong>HP-UX<\/strong><\/li>\n<\/ul>\n\n\n\n<p>UNIX powered <strong>servers, workstations, and mainframes<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UNIX Today (2000s\u2013Present)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>UNIX principles strongly influenced modern systems:\n<ul class=\"wp-block-list\">\n<li><strong>Linux<\/strong><\/li>\n\n\n\n<li><strong>macOS<\/strong><\/li>\n\n\n\n<li><strong>BSD variants<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>UNIX is still used in <strong>servers, telecom, banking, and research<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Key Features of UNIX<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Multi-user &amp; multitasking<\/li>\n\n\n\n<li>Strong security &amp; permissions<\/li>\n\n\n\n<li>Powerful command line<\/li>\n\n\n\n<li>File-based system design<\/li>\n\n\n\n<li>Stability and scalability<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"809\" src=\"https:\/\/mitalgoswami.in\/wp-content\/uploads\/2026\/01\/Pdp7-oslo-2005-1024x809.jpeg\" alt=\"\" class=\"wp-image-381\" srcset=\"https:\/\/mitalgoswami.in\/wp-content\/uploads\/2026\/01\/Pdp7-oslo-2005-1024x809.jpeg 1024w, https:\/\/mitalgoswami.in\/wp-content\/uploads\/2026\/01\/Pdp7-oslo-2005-300x237.jpeg 300w, https:\/\/mitalgoswami.in\/wp-content\/uploads\/2026\/01\/Pdp7-oslo-2005-768x607.jpeg 768w, https:\/\/mitalgoswami.in\/wp-content\/uploads\/2026\/01\/Pdp7-oslo-2005.jpeg 1201w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>History of UNIX (Short &amp; Clear) &#x1f539; Origins (1960s\u20131970s) &#x1f539; C Language &amp; Portability (1973) &#x1f539; Academic Spread (1970s\u20131980s) &#x1f539; Commercial UNIX (1980s\u20131990s) Many companies released their own UNIX versions: UNIX powered servers, workstations, and mainframes. UNIX Today (2000s\u2013Present) Key Features of UNIX<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-380","post","type-post","status-publish","format-standard","hentry","category-unix"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=\/wp\/v2\/posts\/380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=380"}],"version-history":[{"count":2,"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=\/wp\/v2\/posts\/380\/revisions"}],"predecessor-version":[{"id":396,"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=\/wp\/v2\/posts\/380\/revisions\/396"}],"wp:attachment":[{"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mitalgoswami.in\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}