Refcards

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://training.github.com/kit/downloads/github-git-cheat-sheet.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:

• Numpi/Pandas: http://www.cheat-sheets.org/saved-copy/NumPy_SciPy_Pandas_Quandl_Cheat_Sheet.pdf
• Cheat Sheets: http://www.cheat-sheets.org/
• Python Tutorial: http://fivedots.coe.psu.ac.th/Software.coe/learnPython/Cheat%20Sheets/python2.pdf
• Python: http://www.cheat-sheets.org/saved-copy/PQRC-2.4-A4-latest.pdf
• Python: https://www.cheatography.com/davechild/cheat-sheets/python/pdf/
• Python API Index: http://overapi.com/python
• Python 3: https://perso.limsi.fr/pointal/_media/python:cours:mementopython3-english.pdf