crankx - crank multi-control client
crankx <prefix> [crankctl opts]
crankx multiplexes crankctl calls over a prefix.
The prefix is prepended with /var/crank/ unless it start with a . or /
crankx will then invoke crankctl for each $prefix-*.ctl file.
Example:
crank -name api-8080 -addr :8080 &
crank -name api-8081 -addr :8081 &
# Starts api.rb on both crank processes in turn:
crankx api run api.rb -wait