Merge pull request #441 from geekpi/master

[Translating] 10 Lesser Known Commands for Linux – Part 3
发布：Options in Linux RPM Command to Query Packages
发布：How to Install Linux Kernel 3.12 in Ubuntu 13.10
翻译中 by小眼儿
已翻译 by小眼儿

Signed-off-by: tinyeyeser <tinyeyeser@gmail.com>
Merge pull request #443 from tinyeyeser/master

已翻译 by小眼儿
20131120-1 选题
[Translating] Linux diff Command Explained With Examples