Query the server status

Usage

vos_status(p = NA, wait = 10)

p: a process object, returned by vos_process() or vos_start(). (will be restored from cache if not provided)
wait: number of seconds to wait for server to come online

a character string indicating the state of the server:

"not detected" if no process can be found
"dead" process exists but reports that server is not alive. Server may fail to come online due to errors in configuration file. see vos_configure()
"running" Server is up and accepting queries.
"sleeping" Server is up and accepting queries.

Note: Use vos_log() to see the full log

if(has_virtuoso())
  vos_status()
#> virtuoso isn't running.