some reference materies about Bash script
some little but useful slides about Linux
new directory for Linux stuff and Advanced Linux Programming Source Code
add a quick tutorial for debugging bash script from CoolShell
the tutorials for makefile and make are ready
ignore the compiled executes for ALP
fix No such file or directory:linux/sys.h
test git mv by making a new directory
move shell related stuff to shell directory
move linux related stuff to linux directory
makefile tutorials will reside in makefile directory
new directory for autotools(autoconf, automake, etc)