1. UnixUnix Basic

2. Convention Italic text indicates text displayed by the computer system. For example, login: indicates a login prompt displayed by the system. If you see bold text. You type the text exactly as shown. For example, more file_name means that you type more followed by a file name of your choice. You type the corresponding key on the keyboard. For example, means you hold down the key while pressing the key. [...]Represents the optional items in a command-line entry.

3. Example

4. File System Root / CPCCUX1 Staff Student dcykchodcywchan50341256

5. Some useful commands ls (list the content) man (manual) pwd (present working directory) cd (change directory) chmod (change the mode) cat (type the content)

6. Example – ls ls – l (long listing)

7. Example – pwd

8. Example – cd cd./public_html

9. Example – logout

10. Example – cat

11. vi command Esc (Move cursor) h j k l $ (end of line) Esc (insert or append character) a append after the character i insert before the character Esc (delete line or character) dd delete a line dw delete a word x delete a single character Esc (write to a file) :wq write and quit :q! Quit only