setupaptarchive --no-update
-APTARCHIVE=$(readlink -f ./aptarchive)
-rm -f $APTARCHIVE/dists/unstable/*Release*
+APTARCHIVE="$(readlink -f ./aptarchive)"
+find "$APTARCHIVE/dists/unstable" -name '*Release*' -delete
# update without authenticated InRelease file
testwarning aptget update --allow-insecure-repositories