how to defrag mac computer

Many users now like and are accustomed to using the U disk boot disk to install the system, but sometimes, we still encounter the use of hard disk installation system. Today, I teach you how to use the hard disk to install OS X Yosemite. OS X Yosemite Hard Drive installation process: First step, hard disk partition preparation 1, open the Disk tool, select the partition: "Partition Layout" select "2 Partitions"; 2, the second partition size adjustment, control around 50GB, the

1, in the Mac computer Desktop we click on the "Calendar" below 2, after opening into the Mac calendar we can click here to add an event 3, the right mouse button or dual-click Touch Board, click the new event as shown in the following figure 4. After we create, we can fill in the name of the event to add 5, then in the event na

Method One, using the shortcut buttons on the keyboard 1, we in the computer we press the control+shift+ optical Drive eject button (upper right corner) to quickly turn off the monitor as shown in the following figure. 2, if we want to use again when we press the MAC keyboard can again enter the activation system, into the login interface. Method Two, use Mission control to trigger the s

Apple Mac computer compression and decompression file and folder method 1, if you need to deal with the file is not on the desktop, then you need to first click on the "Go to"---"Computer" 2, in the Computer window on the left, there are "All My Folders", "Application", "desktop" ... Pictures these options. You can

Enter the following commands in the terminal to display them.　　Defaults write Com.apple.finder Appleshowallfiles-bool trueIf you want to restore the hide, you can use this command:　　Defaults write Com.apple.finder Appleshowallfiles-bool falseNote:1. You need to restart the Finder to see the effect after executing the command. 2, do not tamper with the hidden files do not understand, may damage your system.This article from "Granger" blog, declined reprint!Apple

Tag: Enter the zip BSP to unzip the select PC to resolve the installation commandDownload a RAR file, there is a password, you understand.But on the Mac, with Unrar decompression, only the empty files can be extracted, with Izip decompression, directly parked there do not move.Had to search the Internet. Found a way.Installation of the command-line version of Unrar:brew install Unrar with brewThen in the directory of RAR files, with the command Unrar

Http://stackoverflow.com/questions/32821189/xcode-7-error-missing-ios-distribution-signing-identity-for Download Https://developer.apple.com/certificationauthority/AppleWWDRCA.cer Double-click to install to Keychain. Then in Keychain, select View--"Show Expired certificates" in Keychain app. It'll list all the expired certifcates. Delete "Apple Worldwide Developer relations Certificate Authority Certificates" from "Login" tab And also delete it from the "System" tab. Now i

Apple has removed Java's preference management from its latest upgrade, so it is now difficult to manage the JDK version on Mac systems. I recently noticed that after loading the jdk8 want to change back, online tips are not good to use AH. After a lot of Google, I found a simple way to share.function Setjdk () { if [$#-ne 0]; then removefrompath '/system/library/frameworks/javavm.framework/home/bin ' if [-N "${java_home+x}"]; then removefromp

a method of cleaning system cache with self-function for Mac computer The user said that although the installation of Third-party software can easily implement a key to clean up the system cache, but there may be some strange problems. Next, let's see how he uses the system's own features to clean up the system cache. 1, select Launchpad-Enter settings-click on Activity Monitor.

How to set Safari browser font size for Apple Mac computer 1, first please open Safari's "preferences", as shown in the picture 2, in the preferences, click the "Advanced" tab, as shown in the picture 3. In the advanced option, check the "Never use font of the following size" option in the accessibility feature, as shown in the figure 4, then on the right to choose a larger font, th

1. We first make sure that our iphone system is OS X 10.10, and we must have itunes 12.2.1 version. 2, then we in the itunes "Notification Center" to find the following "new project" to enter after we click "Continue" and then click the "Edit" option in the interface. 3, then we open into the "Notification Center"-"edit mode" after we find the ITunes column, click the + button. 4, and then we exit the Notification center, and then open to see ITunes appears, as shown i

1, we in the Mac computer click on the top of the Apple icon to open into 2, then in the entry after we click on the System Preferences icon to open, the effect is as follows. 3, then we click on the Java icon elsewhere to open the Java Control Panel into the. 4, in the open Java we click on "Internet temporary files" and then we open the entry 5. Click the Delete File button in the Temporary Internet f

1 Angular programming Software: Webstorm2 Angular Environment Construction Nodejs, Angular cli,webstormNodejs Npm-v can see the version of Nodejs after installation is completesudo npm install-g @angular/cli (Install angular command line tool)Ng-v (view angular command-line tool version)3 Angular Project Document interpretationAngular-cli.json command-line tool configuration file, referring to a third-party package (Boostrap,jquery) to modify this fileThird-party dependency packages for Package.

Displays the name of the terminal or pseudo terminal Tty Stty Display or reset control key definitions Stty-a Du Querying disk usage Du-k SubDir Df Displays the total and free space of the file system Df/tmp W Displays the total information for the current system activity KekemarsLinks: https://www.jianshu.com/p/3291de46f3ffSource: PinterestCopyright belongs to the author. Commerc

I. What is SSH?Http://www.ruanyifeng.com/blog/2011/12/ssh_remote_login.htmlSecond, demand: a computer (Mac OS) to manage multiple SSH keys, you can switch arbitrarily, to achieve a multi-user (account) using different SSH submission code.Here's an example of using Gerrit and GitHub accounts.1) Generate SSH keyIf you return all the way (password can not be written), this will only generate Id_rsa and id_rsa.

First, we click on the computer desktop "Apple logo" and then after entering our drop-down menu click the "System Preferences" effect is as follows Second, after we go to the "system preferences" to find the following "monitor" icon, as shown in the following figure Third, in the display interface, resolution prompts the system is the most current resolution, click Select Zoom. And then here we will see a lot of resolution in

1. We open in QQ to block the message QQ Group, and then we click "Settings" as shown in the following figure. 2. Then we can click on the "Full screen" so that this QQ group of messages filtered out. 3. Of course, QQ designers have long thought of this problem, we can set the message to save to the server, so we want to see the open group can see. Some friends will say sister AH this QQ group message is not the same as the computer setting

1. First, we will move the mouse to the screen in the lower right corner of the notification area, in this area, we need to find the network icon, and then we click on the Network icon, and then choose to open the network and Sharing Center. 2. In the Open interface, we first click the change adapter settings in the left-hand menu, and then we can see all the network connection icons in the Windows system. 3. We select the network card settings that we need to modify, and then we right-cli

1. Open the Keychain Access app on your MAC first, as shown in the figure 2. Next, click on the "Keychain Access-preferences" option in the menu bar, as shown in the figure 3. In the Keychain Preferences window, tick the "Show Keychain status in menu bar" option, as shown in the figure 4. Click the lock icon in the menu bar, then click the "Lock Screen" option to lock the screen. 5. Of course, if you are a MacBook Air or MacBook Pro laptop

One: Method 11: Open terminal　　　　　　2: Drag the folder into the terminal.　　　　3: The path is displayed.　　Second, Method 21: Show full path(1) Open terminal (Application-and utility) and enter the following two commands:Defaults write Com.apple.finder _fxshowposixpathintitle-bool true;killall Finder　　(2) Results　　2: Restore default state, do not show full path(1) Open terminal (Application-and utility) and enter the following two commands:Defaults write Com.apple.finder _fxshowposixpathintitle-bool