usefuls common command
| Command | Descriptions |
|---|---|
| echo | displays info on console |
| read | read user input |
| substr | gets substring of string |
| + | combine string |
| file | open file |
| mkdir | create directory |
| cp | copy file |
File & Folder
| Command | Descriptions |
|---|---|
| echo | displays info on console |
env /usr/bin/env