What is update-alternatives command?

What is update-alternatives command?

update-alternatives creates, removes, maintains and displays information about the symbolic links comprising the Debian alternatives system. It is possible for several programs fulfilling the same or similar functions to be installed on a single system at the same time.

How do I update my alternatives?

10 Answers

1. Install the alternative for javac $ sudo update-alternatives –install /usr/bin/javac javac /opt/java/jdk1.8.0_144/bin/javac 1.
2. Check / update the alternatives config: $ sudo update-alternatives –config javac.

How do I uninstall update-alternatives?

2 Answers

1. Remove the link from /etc/alternatives.
2. Remove the relevant file from the admin directory. /var/lib/dpkg/alternatives/ on ubuntu (debian may be the same but check the man pages under the FILES section) /var/lib/alternatives/ on CentOS 6&7.

How do I change the default editor in Vim?

Set Vim as your default editor by adding the following to ~/.bashrc:

1. # set default editor to Vim. export EDITOR=vim.
2. # set default editor to Vim. export EDITOR=vim.
3. ” ensure that legacy compatibility mode is off. ” documentation: http://vimdoc.sourceforge.net/htmldoc/options.html#’compatible’ set nocp.

What is update-alternatives java?

update-java-alternatives is a program to update alternatives for jre/jdk installations. update-alternatives is a symbolic link management system for linux (I’m sure there is little news here). You can, and really should, use both update-java-alternatives and update-alternatives together.

What is update-alternatives in Linux?

When each package providing a file with a particular functionality is installed, changed or removed, alternatives is called to update information about that file in the alternatives system. alternatives is usually called from the %post or %pre scripts in RPM packages.

What is priority in update-alternatives?

1 Answer. From man update-alternatives : Each alternative has a priority associated with it. When a link group is in automatic mode, the alternatives pointed to by members of the group will be those which have the highest priority.

How do I change my default editor on Mac?

Show activity on this post.

1. Right click on a . txt file in Finder.
2. Choose “Get Info”.
3. Expand “Open with:” and choose your preferred text editor in the drop-down.
4. Push the “Change All…” button below the drop-down and then confirm in the dialog that pops up with “Continue”.

How do I change my bash editor?

How to set the default text editor in Linux

1. Log in to your account using SSH.
2. Open the . bashrc file in your preferred text editor.
3. Add the following lines to the .bashrc file.
4. Save the changes to the .
5. To make the new default text editor settings take effect, log out of your account and then log back in.

How do I change java version to alternative?

B. 6. Setting the default JDK with the alternatives Utility

1. Become the root user. The alternatives utility needs to be run with root privileges.
2. Set java . Run the following command: /usr/sbin/alternatives –config java.
3. Set javac . Enter this command: /usr/sbin/alternatives –config javac.
4. Extra Step: Set java_sdk_1.

How do I install java without Internet?

Download and Install

1. Go to the Manual download page.
2. Click on Windows Offline.
3. The File Download dialog box appears prompting you to run or save the download file.
4. Close all applications including the browser.
5. Double-click on the saved file to start the installation process.