Refcards

We present you with a list of useful short refrence cards. This cards can be extremly useful to remind yourself about some important commands and features. Having them could simplify your interaction with the systems, We not only collected here some refcards about Linux, but also about other useful tools and services.

If you like to add new topics, let us know via your contribution (see the contribution section).

Emacs https://www.gnu.org/software/emacs/refcards/pdf/refcard.pdf
Vi http://www.ks.uiuc.edu/Training/Tutorials/Reference/virefcard.pdf
Linux http://www.cs.jhu.edu/~joanne/unixRC.pdf
Makefile http://www.tofgarion.net/lectures/IN323/refcards/refcardMakeIN323.pdf
R https://cran.r-project.org/doc/contrib/Short-refcard.pdf
Python https://dzone.com/refcardz/core-python
Python Data https://dzone.com/refcardz/data-mining-discovering-and
SQL http://www.digilife.be/quickreferences/QRC/MySQL-4.02a.pdf
Vim http://michaelgoerz.net/refcards/vimqrc.pdf
LaTeX https://wch.github.io/latexsheet/latexsheet.pdf
Git https://education.github.com/git-cheat-sheet-education.pdf
Openstack http://docs.openstack.org/user-guide/cli_cheat_sheet.html
Openstack http://cmias.free.fr/IMG/pdf/rc208_010d-openstack_2.pdf
RST https://github.com/ralsina/rst-cheatsheet/blob/master/rst-cheatsheet.pdf

Others: