Simple nodejs server. Just serving files with mime types (-file ext).

app.js

#!/usr/bin/node

var http = require("http"),
    url = require("url"),
    path = require("path"),
    fs = require("fs")
    port = process.argv[2] || 3000,
    root = process.argv[3] || '/www',
      
    mime = {".3dm":"x-world/x-3dmf",".3dmf":"x-world/x-3dmf",".a":"application/octet-stream",".aab":"application/x-authorware-bin",".aam":"application/x-authorware-map",".aas":"application/x-authorware-seg",".abc":"text/vnd.abc",".acgi":"text/html",".afl":"video/animaflex",".ai":"application/postscript",".aif":"audio/x-aiff",".aifc":"audio/x-aiff",".aiff":"audio/x-aiff",".aim":"application/x-aim",".aip":"text/x-audiosoft-intra",".ani":"application/x-navi-animation",".aos":"application/x-nokia-9000-communicator-add-on-software",".aps":"application/mime",".arc":"application/octet-stream",".arj":"application/octet-stream",".art":"image/x-jg",".asf":"video/x-ms-asf",".asm":"text/x-asm",".asp":"text/asp",".asx":"video/x-ms-asf-plugin",".au":"audio/x-au",".avi":"video/x-msvideo",".avs":"video/avs-video",".bcpio":"application/x-bcpio",".bin":"application/x-macbinary",".bm":"image/bmp",".bmp":"image/x-windows-bmp",".boo":"application/book",".book":"application/book",".boz":"application/x-bzip2",".bsh":"application/x-bsh",".bz":"application/x-bzip",".bz2":"application/x-bzip2",".c":"text/x-c",".c++":"text/plain",".cat":"application/vnd.ms-pki.seccat",".cc":"text/x-c",".ccad":"application/clariscad",".cco":"application/x-cocoa",".cdf":"application/x-netcdf",".cer":"application/x-x509-ca-cert",".cha":"application/x-chat",".chat":"application/x-chat",".class":"application/x-java-class",".com":"text/plain",".conf":"text/plain",".cpio":"application/x-cpio",".cpp":"text/x-c",".cpt":"application/x-cpt",".crl":"application/pkix-crl",".crt":"application/x-x509-user-cert",".csh":"text/x-script.csh",".css":"text/css",".cxx":"text/plain",".dcr":"application/x-director",".deepv":"application/x-deepv",".def":"text/plain",".der":"application/x-x509-ca-cert",".dif":"video/x-dv",".dir":"application/x-director",".dl":"video/x-dl",".doc":"application/msword",".dot":"application/msword",".dp":"application/commonground",".drw":"application/drafting",".dump":"application/octet-stream",".dv":"video/x-dv",".dvi":"application/x-dvi",".dwf":"model/vnd.dwf",".dwg":"image/x-dwg",".dxf":"image/x-dwg",".dxr":"application/x-director",".el":"text/x-script.elisp",".elc":"application/x-elc",".env":"application/x-envoy",".eps":"application/postscript",".es":"application/x-esrehber",".etx":"text/x-setext",".evy":"application/x-envoy",".exe":"application/octet-stream",".f":"text/x-fortran",".f77":"text/x-fortran",".f90":"text/x-fortran",".fdf":"application/vnd.fdf",".fif":"image/fif",".fli":"video/x-fli",".flo":"image/florian",".flx":"text/vnd.fmi.flexstor",".fmf":"video/x-atomic3d-feature",".for":"text/x-fortran",".fpx":"image/vnd.net-fpx",".frl":"application/freeloader",".funk":"audio/make",".g":"text/plain",".g3":"image/g3fax",".gif":"image/gif",".gl":"video/x-gl",".gsd":"audio/x-gsm",".gsm":"audio/x-gsm",".gsp":"application/x-gsp",".gss":"application/x-gss",".gtar":"application/x-gtar",".gz":"application/x-gzip",".gzip":"multipart/x-gzip",".h":"text/x-h",".hdf":"application/x-hdf",".help":"application/x-helpfile",".hgl":"application/vnd.hp-hpgl",".hh":"text/x-h",".hlb":"text/x-script",".hlp":"application/x-winhelp",".hpg":"application/vnd.hp-hpgl",".hpgl":"application/vnd.hp-hpgl",".hqx":"application/x-mac-binhex40",".hta":"application/hta",".htc":"text/x-component",".htm":"text/html",".html":"text/html",".htmls":"text/html",".htt":"text/webviewhtml",".htx":"text/html",".ice":"x-conference/x-cooltalk",".ico":"image/x-icon",".idc":"text/plain",".ief":"image/ief",".iefs":"image/ief",".iges":"model/iges",".igs":"model/iges",".ima":"application/x-ima",".imap":"application/x-httpd-imap",".inf":"application/inf",".ins":"application/x-internett-signup",".ip":"application/x-ip2",".isu":"video/x-isvideo",".it":"audio/it",".iv":"application/x-inventor",".ivr":"i-world/i-vrml",".ivy":"application/x-livescreen",".jam":"audio/x-jam",".jav":"text/x-java-source",".java":"text/x-java-source",".jcm":"application/x-java-commerce",".jfif":"image/pjpeg",".jfif-tbnl":"image/jpeg",".jpe":"image/pjpeg",".jpeg":"image/pjpeg",".jpg":"image/pjpeg",".jps":"image/x-jps",".js":"application/javascript",".jut":"image/jutvision",".kar":"music/x-karaoke",".ksh":"text/x-script.ksh",".la":"audio/x-nspaudio",".lam":"audio/x-liveaudio",".latex":"application/x-latex",".lha":"application/x-lha",".lhx":"application/octet-stream",".list":"text/plain",".lma":"audio/x-nspaudio",".log":"text/plain",".lsp":"text/x-script.lisp",".lst":"text/plain",".lsx":"text/x-la-asf",".ltx":"application/x-latex",".lzh":"application/x-lzh",".lzx":"application/x-lzx",".m":"text/x-m",".m1v":"video/mpeg",".m2a":"audio/mpeg",".m2v":"video/mpeg",".m3u":"audio/x-mpequrl",".man":"application/x-troff-man",".map":"application/x-navimap",".mar":"text/plain",".mbd":"application/mbedlet",".mc$":"application/x-magic-cap-package-1.0",".mcd":"application/x-mathcad",".mcf":"text/mcf",".mcp":"application/netmc",".me":"application/x-troff-me",".mht":"message/rfc822",".mhtml":"message/rfc822",".mid":"x-music/x-midi",".midi":"x-music/x-midi",".mif":"application/x-mif",".mime":"www/mime",".mjf":"audio/x-vnd.audioexplosion.mjuicemediafile",".mjpg":"video/x-motion-jpeg",".mm":"application/x-meme",".mme":"application/base64",".mod":"audio/x-mod",".moov":"video/quicktime",".mov":"video/quicktime",".movie":"video/x-sgi-movie",".mp2":"video/x-mpeq2a",".mp3":"video/x-mpeg",".mpa":"video/mpeg",".mpc":"application/x-project",".mpe":"video/mpeg",".mpeg":"video/mpeg",".mpg":"video/mpeg",".mpga":"audio/mpeg",".mpp":"application/vnd.ms-project",".mpt":"application/x-project",".mpv":"application/x-project",".mpx":"application/x-project",".mrc":"application/marc",".ms":"application/x-troff-ms",".mv":"video/x-sgi-movie",".my":"audio/make",".mzz":"application/x-vnd.audioexplosion.mzz",".nap":"image/naplps",".naplps":"image/naplps",".nc":"application/x-netcdf",".ncm":"application/vnd.nokia.configuration-message",".nif":"image/x-niff",".niff":"image/x-niff",".nix":"application/x-mix-transfer",".nsc":"application/x-conference",".nvd":"application/x-navidoc",".o":"application/octet-stream",".oda":"application/oda",".omc":"application/x-omc",".omcd":"application/x-omcdatamaker",".omcr":"application/x-omcregerator",".p":"text/x-pascal",".p10":"application/x-pkcs10",".p12":"application/x-pkcs12",".p7a":"application/x-pkcs7-signature",".p7c":"application/x-pkcs7-mime",".p7m":"application/x-pkcs7-mime",".p7r":"application/x-pkcs7-certreqresp",".p7s":"application/pkcs7-signature",".part":"application/pro_eng",".pas":"text/pascal",".pbm":"image/x-portable-bitmap",".pcl":"application/x-pcl",".pct":"image/x-pict",".pcx":"image/x-pcx",".pdb":"chemical/x-pdb",".pdf":"application/pdf",".pfunk":"audio/make.my.funk",".pgm":"image/x-portable-greymap",".pic":"image/pict",".pict":"image/pict",".pkg":"application/x-newton-compatible-pkg",".pko":"application/vnd.ms-pki.pko",".pl":"text/x-script.perl",".plx":"application/x-pixclscript",".pm":"text/x-script.perl-module",".pm4":"application/x-pagemaker",".pm5":"application/x-pagemaker",".png":"image/png",".pnm":"image/x-portable-anymap",".pot":"application/vnd.ms-powerpoint",".pov":"model/x-pov",".ppa":"application/vnd.ms-powerpoint",".ppm":"image/x-portable-pixmap",".pps":"application/vnd.ms-powerpoint",".ppt":"application/x-mspowerpoint",".ppz":"application/mspowerpoint",".pre":"application/x-freelance",".prt":"application/pro_eng",".ps":"application/postscript",".psd":"application/octet-stream",".pvu":"paleovu/x-pv",".pwz":"application/vnd.ms-powerpoint",".py":"text/x-script.phyton",".pyc":"applicaiton/x-bytecode.python",".qcp":"audio/vnd.qcelp",".qd3":"x-world/x-3dmf",".qd3d":"x-world/x-3dmf",".qif":"image/x-quicktime",".qt":"video/quicktime",".qtc":"video/x-qtc",".qti":"image/x-quicktime",".qtif":"image/x-quicktime",".ra":"audio/x-realaudio",".ram":"audio/x-pn-realaudio",".ras":"image/x-cmu-raster",".rast":"image/cmu-raster",".rexx":"text/x-script.rexx",".rf":"image/vnd.rn-realflash",".rgb":"image/x-rgb",".rm":"audio/x-pn-realaudio",".rmi":"audio/mid",".rmm":"audio/x-pn-realaudio",".rmp":"audio/x-pn-realaudio-plugin",".rng":"application/vnd.nokia.ringing-tone",".rnx":"application/vnd.rn-realplayer",".roff":"application/x-troff",".rp":"image/vnd.rn-realpix",".rpm":"audio/x-pn-realaudio-plugin",".rt":"text/vnd.rn-realtext",".rtf":"text/richtext",".rtx":"text/richtext",".rv":"video/vnd.rn-realvideo",".s":"text/x-asm",".s3m":"audio/s3m",".saveme":"application/octet-stream",".sbk":"application/x-tbook",".scm":"video/x-scm",".sdml":"text/plain",".sdp":"application/x-sdp",".sdr":"application/sounder",".sea":"application/x-sea",".set":"application/set",".sgm":"text/x-sgml",".sgml":"text/x-sgml",".sh":"text/x-script.sh",".shar":"application/x-shar",".shtml":"text/x-server-parsed-html",".sid":"audio/x-psid",".sit":"application/x-stuffit",".skd":"application/x-koan",".skm":"application/x-koan",".skp":"application/x-koan",".skt":"application/x-koan",".sl":"application/x-seelogo",".smi":"application/smil",".smil":"application/smil",".snd":"audio/x-adpcm",".sol":"application/solids",".spc":"text/x-speech",".spl":"application/futuresplash",".spr":"application/x-sprite",".sprite":"application/x-sprite",".src":"application/x-wais-source",".ssi":"text/x-server-parsed-html",".ssm":"application/streamingmedia",".sst":"application/vnd.ms-pki.certstore",".step":"application/step",".stl":"application/x-navistyle",".stp":"application/step",".sv4cpio":"application/x-sv4cpio",".sv4crc":"application/x-sv4crc",".svf":"image/x-dwg",".svr":"x-world/x-svr",".swf":"application/x-shockwave-flash",".t":"application/x-troff",".talk":"text/x-speech",".tar":"application/x-tar",".tbk":"application/x-tbook",".tcl":"text/x-script.tcl",".tcsh":"text/x-script.tcsh",".tex":"application/x-tex",".texi":"application/x-texinfo",".texinfo":"application/x-texinfo",".text":"text/plain",".tgz":"application/x-compressed",".tif":"image/x-tiff",".tiff":"image/x-tiff",".tr":"application/x-troff",".tsi":"audio/tsp-audio",".tsp":"audio/tsplayer",".tsv":"text/tab-separated-values",".turbot":"image/florian",".txt":"text/plain",".uil":"text/x-uil",".uni":"text/uri-list",".unis":"text/uri-list",".unv":"application/i-deas",".uri":"text/uri-list",".uris":"text/uri-list",".ustar":"multipart/x-ustar",".uu":"text/x-uuencode",".uue":"text/x-uuencode",".vcd":"application/x-cdlink",".vcs":"text/x-vcalendar",".vda":"application/vda",".vdo":"video/vdo",".vew":"application/groupwise",".viv":"video/vnd.vivo",".vivo":"video/vnd.vivo",".vmd":"application/vocaltec-media-desc",".vmf":"application/vocaltec-media-file",".voc":"audio/x-voc",".vos":"video/vosaic",".vox":"audio/voxware",".vqe":"audio/x-twinvq-plugin",".vqf":"audio/x-twinvq",".vql":"audio/x-twinvq-plugin",".vrml":"x-world/x-vrml",".vrt":"x-world/x-vrt",".vsd":"application/x-visio",".vst":"application/x-visio",".vsw":"application/x-visio",".w60":"application/wordperfect6.0",".w61":"application/wordperfect6.1",".w6w":"application/msword",".wav":"audio/x-wav",".wb1":"application/x-qpro",".wbmp":"image/vnd.wap.wbmp",".web":"application/vnd.xara",".wiz":"application/msword",".wk1":"application/x-123",".wmf":"windows/metafile",".wml":"text/vnd.wap.wml",".wmlc":"application/vnd.wap.wmlc",".wmls":"text/vnd.wap.wmlscript",".wmlsc":"application/vnd.wap.wmlscriptc",".word":"application/msword",".wp":"application/wordperfect",".wp5":"application/wordperfect6.0",".wp6":"application/wordperfect",".wpd":"application/x-wpwin",".wq1":"application/x-lotus",".wri":"application/x-wri",".wrl":"x-world/x-vrml",".wrz":"x-world/x-vrml",".wsc":"text/scriplet",".wsrc":"application/x-wais-source",".wtk":"application/x-wintalk",".xbm":"image/xbm",".xdr":"video/x-amt-demorun",".xgz":"xgl/drawing",".xif":"image/vnd.xiff",".xl":"application/excel",".xla":"application/x-msexcel",".xlb":"application/x-excel",".xlc":"application/x-excel",".xld":"application/x-excel",".xlk":"application/x-excel",".xll":"application/x-excel",".xlm":"application/x-excel",".xls":"application/x-msexcel",".xlt":"application/x-excel",".xlv":"application/x-excel",".xlw":"application/x-msexcel",".xm":"audio/xm",".xml":"text/xml",".xmz":"xgl/movie",".xpix":"application/x-vnd.ls-xpix",".xpm":"image/xpm",".x-png":"image/png",".xsr":"video/x-amt-showrun",".xwd":"image/x-xwindowdump",".xyz":"chemical/x-pdb",".z":"application/x-compressed",".zip":"multipart/x-zip",".zoo":"application/octet-stream",".zsh":"text/x-script.zsh"};

http.createServer(function(request, response) {

  var uri = url.parse(request.url).pathname
    , filename = path.join(process.cwd(), root, uri);
  
  path.exists(filename, function(exists) {
    if(!exists) {
      response.writeHead(404, {"Content-Type": "text/plain"});
      response.write("404 Not Found\n");
      response.end();
      return;
    }

    if (fs.statSync(filename).isDirectory()) filename += '/index.html';

    fs.readFile(filename, "binary", function(err, file) {
      if(err) {        
        response.writeHead(500, {"Content-Type": "text/plain"});
        response.write(err + "\n");
        response.end();
        return;
      }
      filename.replace(/^.+(\.[a-z0-9]+)$/, function(m, ext) { if ( mime[ext] ) response.setHeader("Content-Type", mime[ext]); });
      response.writeHead(200);
      response.write(file, "binary");
      response.end();
    });
  });
}).listen(parseInt(port, 10));

console.log("Static file server running at\n  => http://localhost:" + port + "/\n  => " + path.join(process.cwd(), root) + "/\nCTRL + C to shutdown");

for linux:

• Download and make it executable

wget https://gist.githubusercontent.com/fentas/10286910/raw/8bfa7e9daeb2b737f02b4338ac6da31f640dc24b/app.js && chmod a+x ./app.js

• Start it

./app.js [port] [relative root]

added root dir and mime recognition.