From: Mischa POSLAWSKY <perl@shiar.org>
Date: Fri, 16 Jun 2017 15:43:34 +0000 (+0200)
Subject: tools: optional verbosity for wget-ifmodified
X-Git-Tag: v1.11~42
X-Git-Url: http://git.shiar.nl/sheet.git/commitdiff_plain/821a18f956f258495c12427351241e7284be74cf

tools: optional verbosity for wget-ifmodified

Silence target date output unless -v is specified.
Build should be more quiet if not debugging.
---

diff --git a/tools/wget-ifmodified b/tools/wget-ifmodified
index bae00f1..05967e1 100755
--- a/tools/wget-ifmodified
+++ b/tools/wget-ifmodified
@@ -4,11 +4,20 @@ set -u
 
 if [ -z "$1" ]
 then
-	echo 'Usage: $0 <url> [<target>]' >&2
+	echo 'Usage: $0 [-v] <url> [<target>]' >&2
 	# download url to target location if modified
 	exit 64 # EX_USAGE
 fi
 
+verbose=
+
+case "$1" in
+-v)
+	verbose=1
+	shift
+	;;
+esac
+
 source=$1
 target=${2:-${source##*/}}
 
@@ -16,7 +25,7 @@ if [ -e "$target" ]
 then
 	modified=$(stat -c%y -L "$target") &&
 	modified=$(date -R -d "$modified")
-	echo download since: $modified
+	[ $verbose ] && echo "download since: $modified"
 fi
 
 headers=${modified:+If-Modified-Since: $modified}