Terminal Tool For Mac

| 13-05-2021
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  • The System Preferences app in macOS offers quite a few settings to customize your Mac. When those are not enough, you’d normally have to rustle up a few Terminal commands to make visual as well as functional changes.
  • Mac OS X includes a great terminal editor, but among the handful of alternatives is one that easily rises above them all. ITerm2 is our pick for the best terminal emulator for Mac OS X thanks to.

These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to install macOS, but it can be useful when you want to install macOS on multiple computers without downloading the installer each time.

Download macOS

  1. Download a macOS installer, such as macOS Mojave or macOS High Sierra.
    To download macOS Mojave or High Sierra for this purpose, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.
  2. When the macOS installer opens, quit it without continuing installation.
  3. Find the installer in your Applications folder as a single ”Install” file, such as Install macOS Mojave.

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Use the 'createinstallmedia' command in Terminal

  1. After downloading the installer, connect the USB flash drive or other volume you're using for the bootable installer. Make sure that it has at least 12GB of available storage and is formatted as Mac OS Extended.
  2. Open Terminal, which is in the Utilities folder of your Applications folder.
  3. Type or paste one of the following commands in Terminal. These assume that the installer is still in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace MyVolume accordingly.
    Mojave:*

    High Sierra:*
    Sierra:
    El Capitan:
  4. Press Return after typing the command.
  5. When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
  6. When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the bootable installer is created.
  7. When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Mojave. You can now quit Terminal and eject the volume.

* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument. The Sierra and El Capitan commands show the proper format of this argument.

Use the bootable installer

After creating the bootable installer, follow these steps to use it.

  1. Connect the bootable installer to a compatible Mac.
  2. Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from it. Your Mac will start up to macOS Recovery.
    Learn about selecting a startup disk, including what to do if your Mac doesn't start up from it.
  3. Choose your language, if prompted.
  4. A bootable installer doesn't download macOS from the Internet, but it does require the Internet to get information specific to your Mac model, such as firmware updates. If you need to connect to a Wi-Fi network, use the Wi-Fi menu in the menu bar.
  5. Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.

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Learn more

For more information about the createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter this path in Terminal:

Mojave:

High Sierra:

Sierra:

El Capitan:

How do I uninstall Java on my Mac?

This article applies to:
  • Platform(s): macOS
macOS Users: Improve the security of your computer by checking for an out-of-date version of Java and removing it by using the Java Uninstall Tool.
» Learn more about the Java Uninstall tool

Uninstall Oracle Java using the Terminal

Note: To uninstall Java, you must have Administrator privileges and execute the remove command either as root or by using the sudo tool.

Remove one directory and one file (a symlink), as follows:

  1. Click on the Finder icon located in your dock
  2. Click on Go in the Finder menu
  3. Click on Utilities
  4. Double-click on the Terminal icon
  5. In the Terminal window Copy and Paste the commands below:
    sudo rm -fr /Library/Internet Plug-Ins/JavaAppletPlugin.plugin
    sudo rm -fr /Library/PreferencePanes/JavaControlPanel.prefPane
    sudo rm -fr ~/Library/Application Support/Oracle/Java
Do not attempt to uninstall Java by removing the Java tools from /usr/bin. This directory is part of the system software and any changes will be reset by Apple the next time you perform an update of the OS.
Note: After successfully uninstalling Java, you may remove Java Deployment cache using these instructions.

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Can I restore Apple Java 6 after uninstalling Oracle Java?

Yes, see the instructions on the Apple website Restore Apple Java 6. If you have JDK 7 or later versions installed on your system and you want to restore Apple Java 6, then those JDK versions need to be uninstalled first. See the instructions to Uninstall JDK.

MORE TECHNICAL INFORMATION
Uninstall JDK

To uninstall JDK 7 and later versions, you must have Administrator privileges and execute the remove command either as root or by using sudo. See the instructions to Uninstall JDK.

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