-md5 $TARGET.tgz > $PORT/distinfo
-rmd160 $TARGET.tgz >> $PORT/distinfo
-sha1 $TARGET.tgz >> $PORT/distinfo
-cksum -a sha256 $TARGET.tgz >> $PORT/distinfo
+cksum -b -a md5 $TARGET.tgz > $PORT/distinfo
+cksum -b -a rmd160 $TARGET.tgz >> $PORT/distinfo
+cksum -b -a sha1 $TARGET.tgz >> $PORT/distinfo
+cksum -b -a sha256 $TARGET.tgz >> $PORT/distinfo