Linux operating system and common commands 2

Date: Time Management

Linux:

Hardware clock: Clock,hwclock

Hwclock

-W: Change Hardware clock

-S: Change the system clock

System clock: Date

Rtc:real Time Clock

Ntp:net Time Protocol

Get help with using the command:

Internal command:

Help COMMAND:

External command:

COMMAND--help

Command manual: Manual

Mans COMMAND

Whatis command: View the commands section

Sub-chapters:

1: User command/bin,/usr/bin,usr/local/bin

2: System call

3: library Call

4: Special files (device files)

5: File format: Interpreting the syntax of a configuration file

6: Game

7: Miscellaneous: Miscellaneous

8: Management Command/sbin,/usr/sbin,/usr/local/sbin

[]: Can be omitted

<>: Required

... : You can use multiple

| : Choose one More

{}: Grouping

Mans:

NAME:

Synopsis: Synopsis, outline

DESCRIPTION:

OPTIONS:

FILES:

BUGS:

EXAMPLES: Example

See ALSO: Also

Flip Screen:

Turn back one screen: SPACE

Turn One screen forward: b

Turn back one line: ENTER

Turn One line forward: K

Find:

/keyword: Backwards

N: Next

N: Previous

? KEYWORD: Forward

N: Next

N: Previous

Q: Exit

Online Documentation:

Info COMMAND

Cal:calendar, view calendar

Echo: Display a line of text

ECHO-E: Enable escape character

\ n: Line break

printf: Formatting and printing data

\ n: Line break

Linux operating system and common commands 2