Use the asadmin undeploy command.
The general form for the command is:
as-install/bin/asadmin undeploy war-name |
For war-name, use the literal hello, not the full hello.war name.
For the hello.war example, the command is:
as-install/bin/asadmin undeploy hello |
See undeploy(1) for more information about the undeploy command.