some imp commands to be edited later..

 perl -pi -e 's/batchSIFTflow1/batchSIFTflowUsingDecaf/g' myBatchSIFTFLowDecaf*.m
 grep  batchSIFTflowUsingDecaf myBatchSIFTFLowDeca*.m
 perl -pi -e 's/gistL2/DecafL2/g' myBatchSIFTFLowDecaf*.m
 diff myBatchSIFTflow16.m myBatchSIFTFLowDecaf16.m
 sed 's/flow1/flowUsingDecaf/g' myBatchSIFTflow16.m | sed 's/,1,/,20,/g' | sed 's/gistL2/DecafL2/g' > tmp
 diff myBatchSIFTflow16.m tmp
 for i in {1..47}; do sed 's/flow1/flowUsingDecaf/g' myBatchSIFTflow$i.m | sed 's/,1,/,20,/g' | sed 's/gistL2/DecafL2/g' > myBatchSIFTFLowDecaf$i.m; done