terraform alternatives

Ubuntu update-alternatives (soft connection management), ubuntualternatives Update-alternatives-manage soft connections/character links (symbolic links) Command Format Update-alternatives [options] command Detailed description Update-alternatives can be used to create, delete, repair, and soft connections. It c

Alternatives is a powerful command under Linux. Can only be performed under root permissions. If there are several commands in the system that are very similar, but cannot be deleted at will, then you can use alternatives to specify a global setting. Alternatives is often used to install multiple versions of the same software in the same system. For example, in

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 install both open jdk and sun in the system JDK two versions, and we want the system to use the sun JDK by default, what to do? Through the update-alternatives can be very convenient to achieve.sudo

Alternatives is a powerful command under Linux. Can only be performed under root authority. If there are several command functions in the system that are very similar, but can not be arbitrarily deleted, then use alternatives to specify a global setting.Alternatives is commonly used to install multiple versions of the same software on the same system. For example, in order to develop the need, I need to ins

I. Functional roleUpdate-alternatives is a utility for dpkg that maintains symbolic links to system commands to determine what commands the system uses by default.In the Debian system, we may install a number of similar programs and optional configurations, such as Web browser programs (firefox,konqueror), window managers (Wmaker, metacity), and different themes for the mouse. In this way, users can choose when they are using the system to meet their

By default, even with Java 1.6 version Java script jdk-6u31-linux-i586.bin, when Java is installed, it will automatically upgrade to a 1.7 version state. For some applications that need to be run based on version 1.6, a downgrade of 1.6 is required. There are two specific ways to do this:1. Use the alternatives command to implement.Alternatives is a powerful command under Linux, and can only be executed under root authority. If there are several comma

Since the development of Linux, there have been a lot of available software. In this way, some software functions are basically the same. For example, there are nvi, Vim, emacs, and nano in the editor. What I'm talking about is only part of it. In most cases, software with similar functions is installed in the system at the same time and can be executed using their names. For example, to execute vim, you only need to input Vim in the terminal and press Enter. However, in some cases, we need to u

Last week when installing the search engine Elasticsearch, asked to install a newer version of Java, I chose Java 1.8.0, the installation of Java after the successful use of java-version found that the version is still 1.6.0,Some information was queried to find that the version of the selected software could be replaced with the Linux Alternatives command.DescriptionAlternatives--install whichInstall indicates installationLink is a symbolic linkName i

Use update-alternatives to switch the default java commands in ubuntuSky @ sky-VGN-CR23-B :~ $ Cd/usr/java/jdk1.7.0 _ 21/Sky @ sky-VGN-CR23-B:/usr/java/jdk1.7.0 _ 21 $ cd ..Sky @ sky-VGN-CR23-B:/usr/java $ sudo ln-s./jdk1.7.0 _ 21./jdk1.7Sky @ sky-VGN-CR23-B:/usr/java $ sudo rm jdk-7u21-linux-i586.tar.gz.Sky @ sky-VGN-CR23-B:/usr/java $ sudo update-alternatives -- install/usr/bin/java/usr/java/jdk1.7/bin/ja

Article 35: Consider alternatives other than the virtual function Article 35 consider alternatives other than the virtual function Realizing template method mode by Non-virtual interface technique Implementing strategy mode with function pointers Complete strategy mode with Tr1function The classical strategy model Summary Virtual func

Personal blog Address: http://www.cnblogs.com/wdfwolf3/Update-alternatives is a command that Ubuntu systems use for software version switching. For example, there are several versions of the JDK in the system that map the directories of these commands to a system directory as a link, then manage them through update-alternatives and set the default startup version. With update-