Merge pull request #663 from crowner/master

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发布：10 Useful Chaining Operators in Linux with Practical Examples
Update How To Properly Install Ubuntu One In Linux Mint 16.md
Merge pull request #664 from yechunxiao19/patch-3

Update How To Properly Install Ubuntu One In Linux Mint 16.md
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Merge pull request #665 from yechunxiao19/master

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Merge pull request #666 from Luoxcat/master

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Merge pull request #668 from KayGuoWhu/master

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Merge pull request #667 from yechunxiao19/patch-4

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发布：Linux vmstat Command - Tool to Report Virtual Memory Statistics
发布：How to stitch photos together on Linux
发布：New Ubuntu 14.04 Icons Are Drop-Dead Gorgeous, Might Not Arrive in Desktop Version
Merge pull request #669 from yechunxiao19/master

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