Experimental Physics and
Industrial Control System

Hello, I write a shell script which use burtrb to save the beamline status every an hour. When I execute the script, it is ok. But I add it as a task by crontab, there always connect failed.

 

The shell script just like:

 

#autosave

#!/bin/bash

Cd pathtosavedata

#create the snap file name

…

…

Pathtoburtrb ?l name.log ?o name.snap

 

Chmod a+x autosave

 

The crontab like below:

30 * * * * user  pathtoautosave

 

 

It did execute the task, but it always failed to connect to pv expect the first one, even I use the parameter ?r 10.  Please help me figure out the problem.

 

Thanks very much.