From 3a6e67783cfa816c37e02b5eea8ef7607e680b6a Mon Sep 17 00:00:00 2001
From: Johannes Schauer Marin Rodrigues <josch@mister-muffin.de>
Date: Sun, 8 Jan 2023 10:33:24 +0100
Subject: debvm-waitssh: add --quiet option

---
 debvm-waitssh | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/debvm-waitssh b/debvm-waitssh
index 4d69657..857a958 100755
--- a/debvm-waitssh
+++ b/debvm-waitssh
@@ -9,7 +9,7 @@ debvm-waitssh - Wait for a ssh server to be reachable
 
 =head1 SYNOPSIS
 
-B<debvm-waitssh> [B<-t> I<timeout>] [I<hostname>:]I<port>
+B<debvm-waitssh> [B<-q>] [B<-t> I<timeout>] [I<hostname>:]I<port>
 
 =head1 DESCRIPTION
 
@@ -25,6 +25,10 @@ If no hostname is given, B<127.0.0.1> is assumed.
 Set the maximum duration for waiting in seconds.
 Defaults to one minute.
 
+=item B<-q>, B<--quiet>
+
+Be quiet. Output nothing on standard error, not even error messages.
+
 =back
 
 =head1 EXIT VALUES
@@ -57,6 +61,7 @@ set -u
 TOTALTIMEOUT=60
 SCANTIMEOUT=10
 SCANDELAY=1
+VERBOSITY=1
 
 nth_arg() {
 	shift "$1"
@@ -68,7 +73,7 @@ die() {
 	exit 2
 }
 usage() {
-	die "usage: $0 [-t <timeout>] [<host>:]<port>"
+	die "usage: $0 [-q] [-t <timeout>] [<host>:]<port>"
 }
 usage_error() {
 	echo "error: $*" >&2
@@ -79,8 +84,13 @@ opt_timeout() {
 	TOTALTIMEOUT=$1
 }
 
-while getopts :t:-: OPTCHAR; do
+opt_verbosity() {
+	VERBOSITY=$1
+}
+
+while getopts :qt:-: OPTCHAR; do
 	case "$OPTCHAR" in
+		q)	opt_verbosity 0;;
 		t)	opt_timeout "$OPTARG"	;;
 		-)
 			case "$OPTARG" in
@@ -95,6 +105,9 @@ while getopts :t:-: OPTCHAR; do
 				timeout=)
 					"opt_${OPTARG%%=*}" "${OPTARG#*=}"
 				;;
+				quiet)
+					opt_verbosity 0
+				;;
 				*)
 					usage_error "unrecognized option --$OPTARG"
 				;;
-- 
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