BASH IO Redirection

In bash, by default, only stdout gets redirected to a file when you use the ">" operator.

To redirect stderr to a file, use the "2>" operator.

To redirect both, use "&>"

Reference:http://www.cyberciti.biz/faq/redirecting-stderr-to-stdout/

Git Undo Staging a File for Commit

If a file has already been staged for commit i.e. via the "git add" command, use the following command to unstage the file:

git reset HEAD <filename>

Iterating Through All Loggers & Appenders in LogBack

Most people probably won't need it, but when you do, this will come in handy.

http://stackoverflow.com/questions/7064402/is-it-possible-to-find-logback-log-files-programmatically

The "spi" Package in Java Projects

It's quite common to find a package called "spi" in Java projects.

Here's an explanation of what it means and what it's for:

• http://stackoverflow.com/questions/2954372/difference-between-spi-and-api