Shell Programming and Scripting

for a in $(eval "${cmd}"); do
	cp --parent -v "$a" "${TARGETDIR}"
done

cmd="find -type f | grep"
for a in ${EXT}; do cmd="${cmd} -e \.${a}$"; done

IFS=$'\n'
#echo "${cmd}"
for a in $(eval "${cmd}"); do
	cp --parent -v "$a" "${TARGETDIR}"
done

find -type f |
while read FILE
do
        echo mv "$FILE" "$TARGET"
done

cmd="find . -type f | grep"
for a in $EXT; do cmd="$cmd -e \.$a$"; done
IFS=$'\n'
for a in $($cmd); do 
    d=$(dirname "$a")
    [[ ! -d "$d" ]] && mkdir -p "$d"
    mv "$a" "$TARGETDIR/$d"
done

cp -ra DIR NEWDIR
find DIR -type f | egrep  '\.(EXT1|EXT2|EXT3|...) | xargs rm
find NEWDIR -type f | egrep -v '\.(EXT1|EXT2|EXT3|...) | xargs rm