1. Download Derby bin distribution from here.
2. Extract it.
3. Set DERBY_HOME and add it to the path.
vi ~/.bashrc
Add as below;
export DERBY_HOME=/opt/software/db-derby-10.3.1.4-bin
export PATH=$PATH:$DERBY_HOME/bin
Then source bashrc
source ~/.bashrc
4. Run $DERBY_HOME/bin/startNetworkServer.sh
sh startNetworkServer
5. To use ij tool;
set DERBY_OPTS=-Dij.protocol=jdbc:derby://localhost/
Then type ij on the prompt to get the ij tool, where u can type in commands.