These are my links for J set 2009 from 11:13 to 14:03:

• Learn Linux, 101: The Linux command line – Summary: GUIs are fine, but to unlock the real power of Linux®, there's no substitute for the command line. In this article, Ian Shields introduces you to some of the major features of the bash shell, with an emphasis on the features that are important for LPI certification. By the end of this article, you will be comfortable using basic Linux commands like echo and exit, setting environment variables, and gathering system information. [The first two notes following Listing 8 have been updated to correct the process IDs (PIDs). -Ed.]
• Learn Linux, 101: A roadmap for LPIC-1 – Summary: Use this roadmap to find IBM developerWorks articles that will help you learn and review basic Linux tasks. And if you're also pursuing professional certification as a Linux system administrator, these articles can help you study for the Linux Professional Institute Certification (LPIC) exam 101 and exam 102. This roadmap is organized according to the 43 objectives in the 101 and 102 exams, which you are required to pass for LPI level 1 certification.
• Learn Linux, 101: Text streams and filters – Summary: There's a lot more to text manipulation than cut and paste, particularly when you aren't using a GUI. Study for the Linux Professional Institute Certification (LPIC) 101 exam, or learn for fun. In this article, Ian Shields introduces you to text manipulation on Linux® using filters from the GNU textutils package. By the end of this article, you will be manipulating text like an expert.
• Forward del traffico fra porte locali con netcat (script Bash, Linux)… « JP’s Web Place – Se avete necessità di redirigere del traffico dati da una porta locale ad un’altra (e non avete a portata qualcosa tipo fpipe), questo scrippettino potrebbe esservi d’aiuto…