sub doXYZ{
   ...
}

##</code><code>##

#Delete Example
$theCmd="del "."\"".$SourcePath."\"   >> ".$LOG_DIR."\\".$F_DUMMY." 2>&1";
$returnCode=system $theCmd; 

#Delete Example
$theCmd="copy "."\"".$SourcePath."\\".$SourcePathFileName."\""." "."\"".$DestPath."\\".$DestPahtFileName."\""." >> ".$LOG_DIR."\\".$F_DUMMY." 2>&1";
$returnCode=system $theCmd; 

##</code><code>##

while(1==1){
   #code here for processing files

   sleep(60);
}

##</code><code>##

#FilesToPostgres.txt looks like this:
processedFileName1.csv
processedFielName1.csv

#PostgreSQL then has a scheduler running which reads that file into a table, and then loops its rows and runs subsequent commands like
COPY tableName FROM /path/to/processedFileName1.csv