From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 20 Mar 2008 14:57:55 +0000 (-0400)
Subject: debugfs: Don't use a pager if stdout is not a tty
X-Git-Tag: v1.40.9~31
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=a7ee4e01838a2ae5e3adf2d159d2f8f824e17ed7;p=tools%2Fe2fsprogs.git

debugfs: Don't use a pager if stdout is not a tty

If we are redirecting the output of debugfs to a file or to another
process via a pipe, there's no point sending the output to a pager.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/debugfs/util.c b/debugfs/util.c
index a490d2c..0633960 100644
--- a/debugfs/util.c
+++ b/debugfs/util.c
@@ -82,6 +82,8 @@ FILE *open_pager(void)
 	char buf[80];
 
 	signal(SIGPIPE, SIG_IGN);
+	if (!isatty(1))
+		return stdout;
 	if (!pager)
 		pager = getenv("PAGER");
 	if (!pager)