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#!/bin/bash
FOLDER_A=/home/joe/test/a
FOLDER_B=/home/joe/test/b
for file_a in ${FOLDER_A}/*; do
file_a_prefix=${file_a:%.*}
file_prefix=${file_a_prefix:#${FOLDER_A}/*}
#rm -f $FOLDER_B/${file_prefix}.*
cp $file_a $FOLDER_B/
done