target/pack/bin/gear app -jar target/pack/examples/gearpump-experiments-distributedshell_$VERSION.jar org.apache.gearpump.examples.distributedshell.DistributedShell
target/pack/bin/gear app -verbose true -jar target/pack/examples/gearpump-experiments-distributedshell_$VERSION.jar org.apache.gearpump.examples.distributedshell.DistributedShellClient -appid $APPID -command "ls /"