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From: Dag-Erling Smørgrav <des@FreeBSD.org>
Date: Tue, 28 May 2013 09:26:48 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-user@freebsd.org
Subject: svn commit: r251055 - user/des/zfs-backup
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Author: des
Date: Tue May 28 09:26:48 2013
New Revision: 251055
URL: http://svnweb.freebsd.org/changeset/base/251055

Log:
  If stdin is not a tty, abort rather than prompt the user.

Modified:
  user/des/zfs-backup/zfs-backup.sh

Modified: user/des/zfs-backup/zfs-backup.sh
==============================================================================
--- user/des/zfs-backup/zfs-backup.sh	Tue May 28 09:25:58 2013	(r251054)
+++ user/des/zfs-backup/zfs-backup.sh	Tue May 28 09:26:48 2013	(r251055)
@@ -105,6 +105,7 @@ if [ -z "$last" ] ; then
 	info "It looks like this is the first backup from $fqsrc to $fqdst." \
 	    "Continuing will DESTROY the contents of $fqdst, including any" \
 	    "preexisting snapshots, and replace them with the contents of $fqsrc."
+	[ -t 0 ] || error "stdin is not a terminal - aborting"
 	while :; do
 		echo -n "Are you sure you want to proceed? (yes/no) "
 		read answer