Set the source code to the default software after installation

After we often use the source code to install a software program, the system will prompt that the software does not exist when entering the software program. This is because it is not associated with the system by default. Such as MySQL and JDK.

 

The following is the default method associated with the system.

Take JDK as an Example

 

(The sudo VI/etc/environment command sets the environment variable. There are many ways to set this, one of which)

 

Update-alternatives -- install/usr/bin/Java/usr/lib/JVM/Java/jdk1.6.0 _ 12/bin/Java 300
Update-alternatives -- install/usr/bin/javac/usr/lib/JVM/Java/jdk1.6.0 _ 12/bin/javac 300

 

If you have multiple jdks, We need to configure them after using a default command above ..

 

Update-alternatives -- config Java

 

If there is only one, it is unnecessary ..