linux常用命令手册 UNIX TOOLBOX This document is a collection of Unix/Linux/BSD commands and tasks which are useful for IT work or for advanced users. This is a practical guide with concise explanations, however the reader is supposed to know what s/he is doing. 1. System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3. File System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4. Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5. SSH SCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6. VPN with SSH . . . . . . . . . . . . . . . . . . . .……