concatenate pdf files with ubunbtu

$ pdfunite ES_0818_1.pdf ES_0818_2.pdf  ES_0818_3.pdf  ex_082018.pdf

In order to remove an (unknown) password from a protected pdf use this command:
$ gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=unencrypted.pdf -c .setpdfwrite -f encrypted.pdf

factorial with RecursiveTask

Install mongodb on ubuntu 16.04

https://www.digitalocean.com/community/tutorials/how-to-install-mongodb-on-ubuntu-16-04

ReactJS Resources

• https://www.pluralsight.com/courses/react-styling-components
• https://egghead.io/courses/react-fundamentals
• React in 15ish minutes - Reactjs Tutorial
• React Official
• https://www.codeschool.com/screencasts/add-a-build-system-to-a-react-application
• https://www.codeschool.com/screencasts/es2015-and-the-virtual-dom-in-a-react-application
• https://www.codeschool.com/screencasts/add-a-router-to-a-react-application
• http://jamesknelson.com/learn-raw-react-no-jsx-flux-es6-webpack/  - [new!]

JS Resources

• https://www.nczonline.net/
• MDN JavaScript
• book: Understanding ECMAScript 6
• https://fivejs.codeschool.com/
• https://babeljs.io/

backticks on italian keyboard

https://forums.modx.com/thread/55468/backtick-e-tilde-su-una-tastiera-italiana

Alt Gr + ’ = `
Alt Gr + ì = ~

ab benchmark

$ ab -A myUsername:myPassword -n 1000 -c 1000 http://localhost:8090/api/words

http://httpd.apache.org/docs/2.4/programs/ab.html

Restarting wireless in Ubuntu

$ sudo service network-manager restart
$ sudo nmcli nm sleep false && sudo pkill -f wpa_supplicant
http://askubuntu.com/questions/564556/cant-connect-to-wifi-after-suspend