From: Mark Wooding <mdw@distorted.org.uk>
Date: Fri, 8 Feb 2013 09:24:18 +0000 (+0000)
Subject: do-slaves: Rewrite output path to prevent buffering of stderr.
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/distorted-bits/commitdiff_plain/b3972a88d1c3c3414d6c6bb31dd8ce13dd4d76d5

do-slaves: Rewrite output path to prevent buffering of stderr.
---

diff --git a/do-slaves b/do-slaves
index de31424..000ded6 100755
--- a/do-slaves
+++ b/do-slaves
@@ -17,7 +17,8 @@ slaves=$(expand-list /etc/slaves "$@")
 for i in $slaves; do
   { { { echo "starting..."
 	set +e; ssh "$i" "$command" 3>&-; rc=$?; set -e
-	echo "done (rc = $rc)"; } >&3; } 2>&1 | sed 's/^/!!! /'; } 3>&1 |
-  sed "s^$i: " &
+	echo "done (rc = $rc)"; } >&3; } 2>&1 |
+    while IFS= read line; do echo "!!! $line"; done; } 3>&1 |
+  while IFS= read line; do echo "$i: $line"; done &
 done
 wait