how to turn off chromebook

--state View all open ports: Firewall-cmd--zone=public-- List-ports Update firewall rules: Firewall-cmd--reload View area information: Firewall-cmd--get-active-zones View specified interface zone: Firewall-cmd-- Get-zone-of-interface=eth0 reject All packages: Firewall-cmd--panic-on de-deny status: Firewall-cmd--panic-off View reject: Firewall-cmd-- Query-panic How do I open a port? Add Firewall-cmd--zone=public --add-port=80/tcp--permanent (--permanen

Turn on the speakerpublic void Openspeaker () {try{Audiomanager Audiomanager = (audiomanager) mcontext.getsystemservice (Context.audio_service);Audiomanager.setmode (Audiomanager.route_speaker);Currvolume =audiomanager.getstreamvolume (Audiomanager.stream_voice_call);if (!audiomanager.isspeakerphoneon ()) {Audiomanager.setspeakerphoneon (TRUE);Audiomanager.setstreamvolume (Audiomanager.stream_voice_call,Audiomanager.getstreammaxvolume (Audiomanager.st

not clicked:After clicking:After clicking again:JavaScript can change most attributes of any HTML element, not just pictures. This is one of the coolest examples, but also the classic sampleCases!!(5) JavaScript: Changing HTML stylesChanging the style of HTML elements is a variant of changing HTML attributes.Instance code:The result of the operation is:After clicking the button:(7) JavaScript: Validating inputJavaScript is often used to validate user input.Instance code:The result after enterin

After installing Linux (UBUNTN), always prompt "System program problem detected", often think is installed what procedure and error, very annoying, so to find some ways on the internet, leave a record here, in case of a rainy days!1. (Pro-Test)This prompt will appear every time you turn it on, and you can close it by using the following method (open terminal, enter the following command): sudo vi/etc/default/apport Change "Enabled" from 1 to 0

Most of the time, we need to set our computer to a timed shutdown, but do not know how to set. In fact, Tencent Computer Butler has this function oh. Below, let small make up to share Tencent computer Butler how timed shutdown. In the second function of the health assistant, "timed shutdown", you will find that there is an open button that only needs to be clicked once, that is, to turn on the function of the timer shutdown. You can set the t

services that Windows must prohibit. You can disable itTCP/IP NetBIOS Helper:netbios is often used to attack under win 9X, and then writes this data to the log or triggers an alert to prevent the data from being searched by a remote computer, it must be bannedPerformance Logs Alerts: Performance Logs and Alerts collects performance data from local or remote computers based on preconfigured schedule parameters, and then writes that data to the log or triggers an alert. If this service is stoppe

For many new Mac users, how to better operate the system is very important. Many people will find that every time you turn on the Mac there will be a number of applications to start automatically, and sometimes we do not need these programs to open, then how do we turn off the Mac Startup items? The following small series to teach you Mac Boot startup key shutdow

window of the options, found that the sound card default "recording" appears dimmed, the original system forced to close the sound card recording channel, in the "Mixer" pull-down menu select "PC Camera", click "OK" after a "capture" window. Properties window The Capture window pops up In the Capture window, click the Advanced button to check automatic gain control. Again the video test, the noise is relatively small, but not sound. Since the camera's built-in voice function is too bad, the

How to set up the micro-letter and not Disturb mode: 1. Install and open the micro-letter, enter the "I" Interface click "Settings." 2. Select "Do Not Disturb mode", will be "Do Not Disturb mode" open and set a good time. What does the micro-trust mode mean? In fact, the micro-letter not disturbing mode is easy to understand. If we do not turn on the phone to mute or not turn

possible not to choose this item OH. 2, download the update, but I will decide when to install Refers to the system automatically check the update (time is random), found that new updates are downloaded to the local, waiting for the administrator to manually install. Recommended for users who often connect to the server remotely. 3, have available download notify me, but do not automatically download or install updates. This is suitable for long-term connection to the server's old n

Sometimes we need to close the screen to have a rest or write something on Ben, but it's distracting when the screen is on, but it's too much trouble to turn off the monitor, so go straight to a small program (non-applet). There is a situation, sometimes at night to leave the computer next, but the computer is still doing things, do not want to shut down the computer, and because the night is dark, the scre

When installing a Linux operating system, some unnecessary packets and applications are automatically installed without the user noticing. In this article, we'll discuss how to disable some of the unnecessary applications and services in your Linux system to protect your system resources. First let's look at what services are running on the system. Use the following command: Output results Now let's use the following netstat command to quickly browse through processes (ports) that accept conne