tcpdump is the premier network analysis tool for information security professionals. Having a solid grasp of this über-powerful application is mandatory for anyone desiring a thorough understanding of TCP/IP.

Stop partition from mounting when hard drive is connected

Usage examples for the lsof command. lsof stand for list open files.

Getting familiar with common uses of lsof

I needed to list all files in a directory, but ls, find, and os.listdir all hung. This is my story. TLDR: Write a C program that calls the syscall getdents directly, with a large buffer size, ignore entries with inode == 0.

Interactive Vim Tutorial

commandlinefu.com is the place to record those command-line gems that you return to again and again.