renaming oprocd.lgl

Oracle Support wants me to rename the oprocd.lgl file right before the crs starts up, but they won't tell me how to do this. I am running on RHEL3. I would expect something like this would work:  

cp /etc/oracle/oprocd/oprocd.lgl /etc/oracle/oprocd/oprocd.lgl_`date +"%Y%m%d"`  

But I am not sure where to put this. If I put it in init.crs, won't it run when the crs is shutdown also? Can someone recommend a better place for it?  

Thanks

Randy  

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