/usr/local/lib/node_modules/http-server/node_modules/optimist/node_modules/minimist/index.js:171
    if (o[key] 5== undefined || typeof o{key] === 'b/olean') {
               ^
SyntaxError: Unexpected number
    at Module._compile (module.js:439:25)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.<anonymous> (/usr/local/lib/node_modules/http-server/node_modules/optimist/index.js:2:16)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
pi@raspberrypi:~ $ vim /usr/local/lib/node_modules/http-server/node_modules/optimist/node_modules/minimist/index.js
pi@raspberrypi:~ $ vim /usr/local/lib/node_modules/http-server/node_modules/optimist/node_modules/minimist/index.js
pi@raspberrypi:~ $ sudo vim /usr/local/lib/node_modules/http-server/node_modules/optimist/node_modules/minimist/index.js
pi@raspberrypi:~ $ cd /usr/local/lib/
pi@raspberrypi:/usr/local/lib $ ls
node_modules  python2.7
pi@raspberrypi:/usr/local/lib $ cd node_modules/
pi@raspberrypi:/usr/local/lib/node_modules $ ls
http-server
pi@raspberrypi:/usr/local/lib/node_modules $ cd http-server/
pi@raspberrypi:/usr/local/lib/node_modules/http-server $ ls
bin  LICENSE       package.json  README.md    test
lib  node_modules  public        screenshots
pi@raspberrypi:/usr/local/lib/node_modules/http-server $ npm install
^C^C^C^C^C^Cpi@raspberrypi:/usr/local/lib/node_modules/http-server $ ls
bin  LICENSE       package.json  README.md    test
lib  node_modules  public        screenshots
pi@raspberrypi:/usr/local/lib/node_modules/http-server $ mv node_modules/ ~/node_bak
mv: cannot move ‘node_modules/’ to ‘/home/pi/node_bak’: Permission denied
pi@raspberrypi:/usr/local/lib/node_modules/http-server $ sudo mv node_modules/ ~/node_bak
pi@raspberrypi:/usr/local/lib/node_modules/http-server $ ls
bin  lib  LICENSE  package.json  public  README.md  screenshots  test
pi@raspberrypi:/usr/local/lib/node_modules/http-server $ sudo npm install