Document exit status values in drill

diff --git a/drill/drill.1.in b/drill/drill.1.in
index 15b15a425333c665a732418925c98ea923150aca..35f11c0f996997ee9a5e6fef5f3001563cbc6b2d 100644 (file)
--- a/drill/drill.1.in
+++ b/drill/drill.1.in
@@ -217,6 +217,12 @@ specify named base64 tsig key, and optional an algorithm (defaults to hmac-md5.s
 \fB\-z \fR
 don't randomize the nameserver list before sending queries.
 
+.SH "EXIT STATUS"
+The exit status is 0 if the looked up answer is secure and trusted,
+or insecure.
+The exit status is not 0 if the looked up answer is untrusted or bogus,
+or an error occerred while performing the lookup.
+
 .SH "FILES"
 .TP
 @LDNS_TRUST_ANCHOR_FILE@