hypervisor alternatives

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Alternatives is an important version management tool under UNIX, which was first seen in the Debain system, because its powerful usability makes it a large number of porting in various UNIX environments, And we probably most often use the Java OPENJDK Toolkit in the usual version of the conversion, and in the alternatives implementation of multi-version is the replacement system using the command link to im

Alternatives command usage Alternatives is a powerful command in Linux. It can only run under the root permission. If the system has several commands with similar functions but cannot be deleted at will, you can use alternatives to specify a global setting.Alternatives is often used to install multiple versions of the same software on the same system. For example

Alternatives command usage Alternatives is a powerful command in Linux. It can only be executed under the root permission. If the system has several command functions that are similar but cannot be deleted at will, you can use alternatives to specify a global setting. Alternatives is often used to install multiple vers

Reprint: http://blog.csdn.net/maixia24/article/details/11707289Update-alternatives is a tool dedicated to maintaining the system command link in the Ubuntu system, which makes it easy to set which command the system uses by default, which software version, for example, we have both open jdk and Sun JDK Two versions installed in the system. And we want the system to use the sun JDK by default, what should we do? Through the update-

Update-alternatives command 1. Functions Update-alternatives is a dpkg utility used to maintain symbolic links of system commands to determine which commands are used by default. In the Debian system, we may install many similar programs and optional configurations at the same time, such as the web browser program (Firefox, Konqueror), Window Manager (wmaker, metacity) different theme from that of the mo

Update-alternatives is a script for switching between multiple commands of the same type and can be installed in Debian via the Apt-get install dpkg. Before explaining the details of Update-alternatives, let's take a look at the examples already in the system. Open the terminal and execute the following command:LsResults: lrwxrwxrwx 1 root root 2011-03-12 15:20/usr/bin/java-/etc/

Use alternatives to convert the java version-general Linux technology-Linux programming and kernel information. The following is a detailed description. After jdk was installed, java and javac were replaced with the java and javac of gij in/usr/bin. Some people on the Internet said that they could use a tool named alternativs to migrate the software version in linux. They decided to use alternatives to mig

Tian haili @ csdn Different Android platforms use different JDK versions during compilation. For example, froyo (2.2) and its earlier versions require JDK; gingerbread and later versions require JDK. If you want to build different platform projects in an environment, you need to install different JDK. It takes time and effort to install JDK repeatedly during project switching. Update-alternatives provides a solution for this situation. This article

Up vote 1 down vote favorite I typed:sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/ jdk1.8.0/bin/java" 1It ' s says alternatives--install needs link name path priorityCommand-Line Edubuntu ShareImprove this question Edited Jul 5 ' + at 17:48 Guntbert4,344 Asked Jul 5 ' + at 16:22 Swapnil18

View the location of the Java commandFind the soft link location for/etc/alternatives/javaIt allows us to see all the optional commands for a command. Execute code:There are two types of alternative: automatic and manual. The initial state of each alternative is automatic, and if the system discovers that the administrator has manually modified a alternative, its status is automatically changed to manualView the current Java versionMy JDK is in this f

Previously, the jdk of ubuntu was installed with the apt-get install command. The default installation is openjdk, and the path is/usr/lib/jvm /. If you need to switch or upgrade the java version, you can use update-alternatives. Of course, you can uninstall and reinstall it, or you can install it by setting environment variables. This section describes how to install update-alternatives.Since the development of Linux, there have been a lot of availab

Update-alternatives is a tool dedicated to maintaining the system command link in the Ubuntu system, which makes it easy to set which command the system uses by default, which software version, for example, we have both open jdk and Sun JDK Two versions installed in the system. And we want the system to use the sun JDK by default, what should we do? Through the update-alternatives can be very convenient to

http://persevere.iteye.com/blog/1479524Update-alternatives is a tool dedicated to maintaining the system command link in the Ubuntu system, which makes it easy to set which command the system uses by default, which software version, for example, we have both open jdk and Sun JDK Two versions installed in the system. And we want the system to use the sun JDK by default, what should we do? Through the update-alterna