系统管理员工具箱系列！（陆续添加中……）

作为一个Linux/Unix的系统管理员，大都熟练运用有一套适合自己工作和环境的系统管理工具，这里罗列了一些来自Internet文章介绍和自己实践的经验两方面的内容，整理一下关于Linux/Unix系统管理员常用的工具系列。

例如，常用的备份工具，常用的网络排查工具，常用的系统管理命令及技巧等！

希望有用！
一些Linux使用技巧和小工具介绍！

＊使用ssh隧道的一些技巧

＊备份工具afio和磁带操作工具mt简介

＊rsync，mirrordir和其他

＊wget和curl，通过命令行下载和测试web

＊GNU Screen程序
Screen是让你在终端下以意想不到的方式工作的利器！多任务和多窗口的功能绝对出色。运行screen启动一个screen会话！screen回话下有很多命令，都是以Ctrl＋A的方式开始，加上相应的命令建！和Emacs的工作方式很象！

＊vmstat: 监控系统虚拟内存系统使用状况；e.x. vmstat 5 10

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