This is a script which you can use to call SJBfft:
#!/bin/bash
# does a fft with all files
# calls "SJBfft"
# $1 is weight (0...non weighted)
#
SAVEPATH=./fkt
WEIGHT=$1
SUFFIX=fft
mkdir $SAVEPATH
for FILE in *.fkt
do
echo sjbfft $FILE
cat $FILE | sjbfft $WEIGHT >$FILE.$SUFFIX
mv $FILE $SAVEPATH
done