Update-alternatives

From KevinWiki

update-alternatives

Config

$ sudo update-alternatives --config java

There are 2 alternatives which provide `java'.

  Selection    Alternative
-----------------------------------------------
          1    /usr/lib/jvm/java-6-sun/jre/bin/java
*+        2    /usr/lib/jvm/java-6-openjdk/jre/bin/java

Press enter to keep the default[*], or type selection number: 1
Using '/usr/lib/jvm/java-6-sun/jre/bin/java' to provide 'java'.

$ ls -l /etc/alternatives/java
lrwxrwxrwx 1 root root 36 2008-09-20 21:11 /etc/alternatives/java -> /usr/lib/jvm/java-6-sun/jre/bin/java

References

http://www.wlug.org.nz/update-alternatives(8)