# procd_set_param(type, [value...])
# Available types:
# command: command line (array).
# procd_set_param(type, [value...])
# Available types:
# command: command line (array).
# env: environment variable (passed to the process)
# data: arbitrary name/value pairs for detecting config changes (table)
# file: configuration files (array)
# env: environment variable (passed to the process)
# data: arbitrary name/value pairs for detecting config changes (table)
# file: configuration files (array)