do not use tail -1; use tail -n 1 instead

diff --git a/tests/tail-2/infloop-1 b/tests/tail-2/infloop-1
index c02323b..a540a64 100755 (executable)
--- a/tests/tail-2/infloop-1
+++ b/tests/tail-2/infloop-1
@@ -24,7 +24,7 @@ yes_pid=$!
 while :; do
   test -s t && break
 done
-tail -1 t &
+tail -n 1 t &
 tail_pid=$!
 kill $yes_pid
 sleep 1