linux手册:html
https://www.cnblogs.com/f-ck-need-u/p/7048359.htmllinux
http://www.javashuo.com/article/p-bmvzlhmc-o.htmlsql
http://man.linuxde.net/tar
https://www.runoob.com/linux/linux-command-manual.html
https://www.cnblogs.com/fnlingnzb-learner/p/5831284.html数据库
在线数据库:oracle
navicat下载:.net
https://blog.csdn.net/weixin_40845165/article/details/84076958htm
在线linudx:blog