An Introduction to the Linux Command Shell For Beginners (pdf)

1.4.2 BASH Command Line References
BASH is the default shell for Ubuntu. The reader should be familiar with basic command line operations. Some additional references are as follows:
◦Linux Command Line (on-line Tutorial and text)
◦An Introduction to the Linux Command Shell For Beginners (pdf)
In addition, there are many other sites dedicated to providing information regarding the BASH command shell.

 

http://vic.gedris.org/Manual-ShellIntro/1.2/ShellIntro.pdf

感谢wayback machine:

https://web.archive.org/web/20120119222437/http://vic.gedris.org/Manual-ShellIntro/1.2/ShellIntro.pdf