Remove a symbolic link sudo update-alternatives -remove java /opt/java/jdk1.8.0_192/bin/javaĤ. Configure a symbolic link for ` java` sudo update-alternatives -config pythonģ. Syntax used to add a symbolic link: sudo update-alternatives -install /usr/local/bin/java java /opt/java/jdk1.8.0_192/bin/java 3Ģ. Example uses of update-alternative command:ġ. But It is always suggested that you should place it somewhere in the /usr/local/bin/ directory as this is the directory where user-space programs should be according to the directory structure of Linux. You can change it to some other path such as /usr/bin/python if you want. Here, /usr/local/bin/python is the binary path of the python alternatives. Sudo update-alternatives -install path/to/symlink command_name path/to/command_binary priority $ sudo update-alternatives -install /usr/local/bin/python python /usr/bin/python2 10 How create a new alternatives python and install Python 2 interpreter /usr/bin/python2 as an alternative with the priority 10 as follows: The Python version that will be used by default can then be readily adjusted and it can also be switched simply. You can create a new Python executable ( /usr/local/bin/python) and add every Python version that is currently available to the alternatives database by using the update-alternatives command. Let's say you have Python 2 and Python 3 installed on your PC as an example. Docker - docker run cmd.cat/update-alternatives update-alternatives The general syntax of update-alternatives command: update-alternatives command.Debian/Ubuntu/Raspbian - apt-get install dpkg.The update-alternatives command is a part of a package manager utility and it is installed with dpkg/ chkconfig package: This provides system users the option to choose their editor of choice if they so choose, but also makes it challenging for a program to choose an editor to invoke if the user has not indicated a specific preference How to install update-alternatives command?
For instance, many systems simultaneously have multiple text editors installed. Multiple programmes that perform the same or related functions may be installed simultaneously on a single system. The symbolic links that make up the package alternatives system are created, removed, maintained, and shown using the update-alternatives command. If you have two or more versions of the same command, you can quickly switch between them and choose which one to run by default by using update-alternatives.
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