add_network_node PC pc1 4096 Larry add_network_node PC pc2 384 Julia system_status create_file pc1 f1 20 create_file pc1 f2 70 create_file pc1 f3 70 create_file pc2 help 200 create_file pc2 dear_mom 5397 create_file pc3 ouch 100 create_file pc1 f4 20 create_file pc1 f5 70 create_file pc1 f6 70 create_file pc1 f7 20 create_file pc1 f8 70 create_file pc1 f9 70 ls pc1 ls pr2 ls pc2 halt