Simple application of shell
01Introduction
There are two ways to interact between users and Linux, namely tty terminal and console physical console (mouse and keyboard).
For better access, Linux provides a virtual console tyy-F1-F6, the initial default terminal is F1. (Ctrl+alt+F1——F6)
The shell is used to execute system commands and call system resources.
02shell command composition
bash [options] [file] command+option+target parameter
03Convention
Brackets []: indicate optional items
Ellipsis...: Any length of the preceding content or type
Angle brackets <>: variable data
Vertical line |: select one more item
04shell prompt
[student@server0~]$($ represents user authority)
[root@server~]# (# represents the administrator authority)
05 shell exit
Ctrl+d or exit.