Merge pull request #3 from LCTT/master

updated at 20140720
Merge pull request #4 from LCTT/master

Update at 20140721
Create 20140716 7 dmesg Commands for Troubleshooting and Collecting Information of Linux Systems.md
Delete 20140716 7 dmesg Commands for Troubleshooting and Collecting Information of Linux Systems.md
Merge pull request #1354 from cvsher/master

7 dmesg Commands for Troubleshooting and Collecting Information of Linux Systems