Shell Programming and Scripting

IFS=":" && \
while read name fein
do
        fein=`echo -n $fein`
        echo "$name:"$(sha1sum <<< $fein)
done < raw_data.txt > hashed_data.txt

first company name:179c94cf45c6e383baf52621687305204cef16f9  -
second company name:a1b42d633e975efc2f665bda21f94e419c1b6074  -

echo "$name:"$(echo -n $fein | sha1sum)

IFS=":" && \
while read name fein
do
        echo "$name:"$(echo -n $fein | sha1sum)
done < raw_data.txt > hashed_data.txt