Linux Common and Fun commands

Linux Common and Fun commands

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There's no need to explain about date, so look at the diagram above and it should be understandable.

%y represents the year

%m represents the Month

%d = Day

When%h represents

And so on, there is time we will proofread time, then will use the NTP service, forget the small partners can review, for NTP just remember how to proofread the time of the command.

2. Commands to display the calendar:

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Show log this wonderful order, perhaps only crooked nuts use it, anyway, I only look at the mobile phone.

3. Important several hotkeys [Tab],[ctrl]-c, [ctrl]-d

[TAB] Key---"Command completion"

[Ctrl]-c button---Let the current program "Stop"

[ctrl]-d button---usually let the command stop, equivalent to exit

4. RHEL6 The following versions switch execution level using init

Linux has a total of seven levels of execution, often using just a few

--run Level 0: Shutdown

--run Level 3: Plain text mode

--run Level 5: Graphics interface mode included

--run Level 6: Restart

Last time mentioned, RHEL7 in the start level has changed, forget the children's shoes in review:

As follows:

Set the default third start level

systemctl Set-default multi-user.target

Set the default fifth boot level

systemctl Set-default graphical.target

View the current default startup level

systemctl Get-default

Graphical.target

Public Number: xinsz08

Linux Common and Fun commands