Assuming that you have installed GemStone in /opt/gemstone/product, follow these steps for starting and stopping the stone:

1. Define $GEMSTONE environment variables ($GEMSTONE/bin and $GEMSTONE/seaside/bin added to your $PATH environment variable):

source /opt/gemstone/product/seaside/defSeaside

2. Copy system.conf and GLASS extent0.dbf files to data directory:

cp $GEMSTONE/seaside/system.conf \ 
  $GEMSTONE/seaside/data
chmod +w $GEMSTONE/seaside/data/system.conf
cp $GEMSTONE/bin/extent0.seaside.dbf \
  $GEMSTONE/seaside/data/extent0.dbf
chmod +w $GEMSTONE/seaside/data/extent0.dbf

3. Start netldi and stone processes:

startnet
startGemstone

4. Ensure stone process is running:

gslist -lcv

5. Stop stone process:

stopGemstone