Yesterday was the fourth day lecture old Liu, obviously, Liu cold a lot better. Liu, do not be too hard for yo.
This chapter tells of 2.6-3.1
2.6 text file editor command
2.7 directory management commands
2.8 compression and packing Search command tar command is very important, somewhat difficult yo
Chapter 3
3.1 input and output redirection>, >>, 2> & >>, <,
