/bin/vsish:
-e: non-interactive mode. Executes commands specified on the cmdline.
All text following this flag is assumed to be part of a command.
-E : checks for status, currently requires -e.
see vmkapi_status.h for error code strings.
-b: batch mode. doesn't print prompt
-f: ignore vsi version check
-l : set loglevel
-r: raw output mode.
-c : use instead of live kernel
-m: print the VSI MD5 checksum corresponding to the running vmkernel
-R : use as the root node instead of '/'
-h: print friendly help message