Basic principles and command formats for Linux

Basic principles of Linux

1, Linux is a single purpose of the small program composition, the combination of small programs to complete complex tasks.

2, Linux system under all documents.

3, try to avoid capturing user excuses.

4. The configuration file is saved in plain text format.

Shell: Human-computer Interface Bash (shell)

GUI interface: Windows-like window

Gli Interface: Command Window

Administrator Display as #

Normal User is $

Linux command format

Command option parameters (with spaces in the middle)

The action of the option: corrects how the command is executed. Options are divided into short options and long options

Short options:-Multiple options can be combined. -a-b can be-ab or-ba (sometimes not input)

Long option:--cannot be combined. Separate selection

Parameter: Refers to the object that the command is acting on.

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