View source for Run scripts more than once per minute

[[Category:Scripts]][[Category:HowTo]]
If you run the scripts by cron, the most often frequency is once per minute.

PVLng offers a wrapper script <tt>PVLng-run.sh</tt> to run a script more than once per minute.

 # ./PVLng-run.sh -h
 
 Run command each period seconds for 1 minute.
 Use in cron with cron period * for each minute.
 
 Usage: PVLng-run.sh [options] -- command parameter1 parameter2 ...
 
 Options:
     -p    Period in seconds, default: 60 (run once)
     -t    Test mode
     -v    Set verbosity level to info level
     -h    Show this help

I monitor my power consumption and my SMA inverters with the following cron tab entries:

 # Fetch plant data each 30s, run mostly during daylight times mostly
 *    4-22    *   *   *   ~/PVLng-run.sh -p 30 -- ~/SMA/Webbox.sh -s Inverters.conf
 *    4-22    *   *   *   ~/PVLng-run.sh -p 30 -- ~/SMA/Webbox.sh -s Sensorbox.conf
 
 # Fetch consumption data each 15s 
 *       *    *   *   *   ~/PVLng-run.sh -p 15 -- ~/S0/S0.sh -s Consumption.conf

Don't forget to divide the real script name and its parameters with the "<tt>--</tt>"

If you run the wrapper script in verbose test mode, it will show you only what will happen:

 #  ~/PVLng-run.sh -tvp 30 -- ~/SMA/Webbox.sh -s Inverters.conf
 [19:58:02.550] Period : 30
 [19:58:02.554] Command: ~/PVLng-scripts/SMA/Webbox.sh -s Inverters.conf
 [19:58:02.559] Run, 1 left ...
 [19:58:02.563] Test mode ...
 [19:58:32.572] Run, 0 left ...
 [19:58:32.576] Test mode ...

For more accuracy the wrapper script will spawn the concrete command into background, so it have not to wait for it.