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Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
BTW, note that when you run a script with "sh script_name", any shebang in it is ignored (since it starts with a "#" comment character). A new shell session is first opened, and the lines in the file are simply executed one after the other. The shebang only has a special function if the script is executed directly.
Also be aware that /bin/sh is not the same as /bin/bash. While bash may be set up as the interpreter for sh, it also may not be, and even if it is, the shell any script executed with "sh" is interpreted according to posix-compliant syntax. Shell-specific features may or may not work as expected.
Last edited by David the H.; 07-20-2012 at 12:13 PM.