Estado atual:
BIGFILE=myverybigfile
echo File size: $(stat -f%z ${BIGFILE}) bytes > RELEASENOTES
echo ${whatissnewinthisbuild} >> RELEASENOTES
Entendi! Algo como isto: (velho)
BIGFILE="myverybigfile"
echo "File size:" 'stat -f%z ${BIGFILE}' "bytes" > RELEASENOTES
echo "${whatissnewinthisbuild}" >> RELEASENOTES