Linux Common Commands

Command Type :

Built-in commands: (Shell built-in), internal, built-in.

External command: There is a command name corresponding executable file under a path in the file system.

Environment variables: named memory space

Variable assignment: Name=tom

[Email protected] u01]# printenv

Path: Using colon-separated paths

Type: display specifies various types

Date: Time Management

Linux:rtc

There are two times: hardware clock system clock (date)

get command Use Help :

Internal command: Help command

External command: Command--help

Command manual: Man command

Sub-chapters :

1. User Commands 2. System call 3. Library user 4. Special files (device files) 5. file format (configuration file Syntax) 6. Games 7. Miscellaneous 8. Management Commands (/sbin,/usr/bin,/usr/local/bin)

[] The content inside indicates the optional <> content is required |: Multiple selection ...: multiple {} groupings can occur

Name: command names and brief descriptions. Synopsis: Usage notes, including available options DESCRIPTION: A detailed description of the command

Options: Description of the meaning of none of the options files: The configuration file associated with this command EXAMPLES: using the example

See ALSO: Another reference

Turn screen : space: Turn back one page B: Turn one page forward enter: Turn down the line K: Turn up the line/keyword: find n: Find the next N: Find the previous

Online Documentation: INFO command

Document:/usr/share/doc

Google

Cal: (Calendar) calendars

Linux Common Commands