Merge pull request #1 from chengtc/master

Merge pull request #3 from pichuang/master
Change `hostname` command
Update timedatectl
Update localectl
Update localectl to us
Fix localectl bug
Merge pull request #4 from pichuang/master

Update timedatectl, localectl, hostnamectl
Merge pull request #5 from starbops/master

"script" 少一個 s
fix #6