常用链接

阿里Maven仓库:http://maven.aliyun.com/

Maven仓库:http://mvnrepository.com/

国外VPS: https://www.vultr.com/?ref=7247411

Google Guava:http://ifeve.com/google-guava/

菜鸟教程: http://www.runoob.com/ 

linux命令总览:  http://www.brendangregg.com/linuxperf.html