To undo a git commit locally, do the following. git log git revert __my_commit_id__ The following will also work. –hard would physically remove your commit, while –soft would simply jump back one commit. git reset --hard HEAD~1 git reset --soft HEAD~1 ref: http://stackoverflow.com/questions/927358/how-to-undo-the-last-git-commit

Use the following to vertically and horizontally center text in a div using display: flex. Hello World! This is line 2… div#my_flex_example{ height: 150px; background: #ccc; display: flex; justify-content: center; align-items: center; border-radius: 15px; } div{ height: 150px; background: #ccc; display: flex; justify-content: center; align-items: center; } For maximum compatibility, add the following: display: -webkit-box; display: -moz-box; display: -ms-flexbox; display: -webkit-flex; display: flex; ref: http://stackoverflow.com/questions/16280040/css3-flexbox-display-box-vs-flexbox-vs-flex

Here are the instructions to install HHVM on Ubuntu 12.04. sudo add-apt-repository ppa:mapnik/boost wget -O - http://dl.hhvm.com/conf/hhvm.gpg.key | sudo apt-key add - echo deb http://dl.hhvm.com/ubuntu precise main | sudo tee /etc/apt/sources.list.d/hhvm.list sudo apt-get update sudo apt-get install hhvm To test if your HHVM is installed, save the following into a file called test.php. Notice there is NO closing tag for hh. <?hh print "hellon"; Then run hhvm test.php, you should see the hello string gets printed out. ...

My wordpress admin page was looking weird for a while. I opened up the debug console and found out some of the css and js files didn’t load correctly. After doing some searches, I found the following fix from here. Simply, in wp-config.php before the require_once lines add the following define('CONCATENATE_SCRIPTS', false); After that, your admin page will look all clean and normal! =)

If you wanna find a file by filename on osx, you can simply use spotlight to locate and open it. However sometimes you want to also know the folder or path of such file. I am not sure how to do that in spotlight or preview but the following command will help. find ~ -iname "my_file.png" The command above will look for my_file.png in your home directory (i.e. ~) and print out the full path of it. ...

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[youtube &w=640&h=360] Amazing… she reminds me of Hit-Girl in Kickass.

A recent critical security vulnerability in the OpenSSL implementation (CVE-2014-0160, also known as “Heartbleed”) affects recent versions of Ubuntu. It’s a good time to update your linux. =) sudo apt-get update sudo apt-get upgrade Then check your Openssl version. openssl version If you see OpenSSL 1.0.1g 7 Apr 2014, then you are good now, stop and go get a beer. If you see OpenSSL 1.0.1 14 Mar 2012, double check by issuing: ...

日语中常以“控”（コン）來代表「情結」（Complex）。 e.g. 長髮控：偏好長頭髮的人物。 日本動漫迷使用術語列表

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