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Installation of YaCy on Debian or Ubuntu

It is also possible to load packages using the update-server at:


To use this server write to /etc/apt/sources.list:

deb http://debian.yacy.net ./

then you can install YaCy with

apt-get update
apt-get install yacy

if you don't already have the Java JDK installed, you may find that you need to use this command instead (on Ubuntu 10.04 [Lucid], the yacy package version 1.0svn8138 does not pull in openjdk-6-jre appropriately as a dependency):

apt-get install yacy openjdk-6-jre

After the installation, the yacy application path is at


The DATA-path is at


When you have installed YaCy that way, YaCy is started automatically after a OS startup, and stopped before shutdown.

You can also start and stop YaCy from the command line with:

/etc/init.d/yacy stop
/etc/init.d/yacy start
/etc/init.d/yacy restart

The YaCy web server runs on port 8090 by default. The administration pages are at


but you can also set any other port for the interface using the administration pages of YaCy. A Port 80 is possible, but it is better to get access to this port using a Portforwarding.

When configured this way, the YaCy-internal auto-updater does not work. An automatic update must be done with OS tools. i.e. with a crontab command. An example for that is the following line, which you must write into /etc/crontab

0 6 * * * root apt-get update && apt-get -y --force-yes install yacy
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