Copy files with modifying file names in Bash

cp_files.sh

#!/bin/bash
srcdir=./sample
dstdir=.

array=(`find $srcdir -type f`)

#echo Length: ${#array[@]}

for i in "${array[@]}"
do
    from="$i"
    to=$dstdir/`sed -e "s/\.cfg.*/\.cfg/g" <<< $(basename $i)` # modify this line as you need
    cp $from $to
done