X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=chost;h=204637b003852d21d7c661b966f41e9a69d73ae5;hb=14f283f82afc48d6cec1bb7498ec34ac2b0da77c;hp=616874151a0aa5c087c1c275198eb4134cbc530e;hpb=a027429011d313e0d9156fef9451f5a55a588163;p=automated-distro-installer

diff --git a/chost b/chost
index 6168741..204637b 100755
--- a/chost
+++ b/chost
@@ -7,7 +7,17 @@ set -eE -o pipefail
 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
 
 host=$1
-addr=$(host $host | sed -rn 's/^\S+ has address //p;T;q')
+# ||: because if we are using 2+ resolvers, 1 may fail, causing error, but we still get
+# a valid address and we just use that
+addr=$(host $host | sed -rn 's/^\S+ has address //p;T;q' ||:)
 h=$(host $addr)
+case $h in
+  *"no PTR record")
+    echo "error: chost: $h" >&2
+    exit 1
+    ;;
+esac
 h=${h##* }
-echo ${h%%.*}
+# trailing dot in a hostname will mess up rsync
+h=${h%.}
+echo $h