shell 脚本关键字&符号
https://www.cnblogs.com/xiaojiang1025/p/5863984.html
rsync同步命令
http://www.jb51.net/article/74589.htm
收集的48个Shell脚本小技巧
http://www.jb51.net/article/53967.htm
shell变量的子串的删除/替换
http://blog.csdn.net/github_33736971/article/details/53980123
内置脚本
https://www.cnblogs.com/sunfie/p/5149678.html
最小化安装
https://www.cnblogs.com/kevingrace/p/5897424.html
理解chroot
https://www.ibm.com/developerworks/cn/linux/l-cn-chroot/
Linux回炉复习系列文章总目录
http://www.cnblogs.com/f-ck-need-u/p/7048359.html