diag − diagnostic script execution program [ catalog ] is an example of a standalone program written with the standalone library.  reads a of standalone programs to be run, and executes each of the programs listed with the arguments indicated in the catalog.  is used at MIPS to run a series of diagnostics, hence the name is normally placed in the home directory on some UMIPS-BSD server.  Standalone systems attached to an ethernet may then run with the prom monitor command:
boot -f bfs()diag catalog_file Once running, prepends "bfs()" before the catalog_file and reads this file via the ethernet and If catalog_file is not specified, the file "bfs()catalog" is read.  should be a list of commands and their arguments.  Each command bfs − description of the boot file server protocol The protocol is spoken between the bfs protocol module of the standalone library and the UMIPS-BSD program The protocol allows standalone programs to read files across an ethernet from a host UMIPS-BSD system.  The protocol is layer on top of the UDP, IP, and ARP protocols and reliesis prepended with "bfs()" and then booted with the arguments that appear on in the catalog_file.