Current URL shortening services uses HTTP 302 response to temporarily redirect instead of 301(Moved Permanently) because of their statistic services. Browser will not access that address more than once if 301 is returned unless the caches have been cleared.

# use curl with `-i` to see the http header
curl -i http://git.io/vJxbs

if brew search used without arguments, local search is performed while remote search is not.

• homebrew-install-specific-version-of-formula on stackoverflow

# encrypt a file
zip -e <out-file> <in-file>
# encrypt a folder
zip -e -r <out-file> <in-folder>

The most comment package managers are pip and easy_install(replaced by its successor pip).

• pip by PyPA(Python Packaging Authority)

• common-python-tools-using-virtualenv-installing-with-pip-and-managing-packages

• $ variables usage, if condition bash loop over file on cyberciti
• if condition test in more detail test exiting value in bash from blog by sanctum
• $?, if condition test check exit status code from linuxcommando

python reference here

• funny explaination, easy to understand INTRODUCTION TO OAUTH (IN PLAIN ENGLISH) by Rob Sobers
• more detail, contain photo explaination An Introduction to OAuth 2 by Mitchell Anicas
• interesting question, actually the question explains a lot, some security issues on-a-high-level-how-does-oauth-2-work
• boring answer How-does-OAuth-2-0-work in quora

According to this, run pip install Pillow instead, because PIL is not maintain and Pillow is maintained fork of it.

Wordpress is a simple CMS(Content Management System) which can be used as a blog page.

• change theme from database

change template ,stylesheet and current_theme rows under wp_options table(a key-value option table).

# show svn repo remote url
svn info .

• differences between svn and git