bin/vm: Bail out when given a bad prefix

1 files changed, 5 insertions, 0 deletions

diff --git a/bin/vm b/bin/vm
index d82b396..12fd6c8 100755
--- a/bin/vm
+++ b/bin/vm
@@ -144,6 +144,11 @@ guess_name() {
 			sed 's/^/- /' >&2
 		exit 2
 	fi
+	if [ -z "$IMAGES" ]; then
+		printf 'Cannot guess name with the given prefix: "%s".\n' "$PREFIX" >&2
+		printf '\nNo possibilities were found.\n' >&2
+		exit 2
+	fi
 	printf '%s\n' "$(basename "$IMAGES" .qcow2)"
 }