Bug 212419

Summary:	--pipe doesn't work for "more"
Product:	[Fedora] Fedora	Reporter:	Kim Lux <lux>
Component:	rpm	Assignee:	Paul Nasrat <nobody+pnasrat>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-08-09 20:17:46 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Kim Lux 2006-10-26 18:36:29 UTC

Description of problem: --pipe more doesn't work

Version-Release number of selected component (if applicable):

rpm --version
RPM version 4.4.2

How reproducible:

Every time


Steps to Reproduce:

1. get an rpm command that produces lots of output.  I recently had a install 
where some users and groups were missing and it scrolled pages of output.  I 
was running in a non graphical terminal, so it was frustrating trying to get 
the output. 

2. I ran rpm -i --pipe more something.rpm
  
Actual results:

I expected the output of rpm to be piped to more so that I could page through 
the errors.  It wasn't.  It was frustrating at the time.

Expected results:

Should have been piped to more ?

I got around the problem by doing rpm -i something.rpm 2 > output.txt

Thanks.

Comment 1 Jeff Johnson 2006-10-27 00:08:32 UTC

Why bother with --pipe?

Try this instead:
    rpm -i ... 2>&1 | more

NOTABUG

Comment 2 Kim Lux 2006-10-28 23:38:26 UTC

I know that the outputs can be redirected to more.  But why doesn't --pipe work
for more ?  If it doesn't work as advertised, then shouldn't it be deleted from
the man page ?  If it doesn't work with more, isn't that a bug, even though
there is a work around ?  Just because there is a work around doesn't mean it
isn't a bug.

Comment 3 Jeff Johnson 2006-10-29 01:05:09 UTC

The --pipe option works for what it was intended for. E.g.

Comment 4 Jeff Johnson 2006-10-29 01:08:10 UTC

The --pipe option works for what it was intended for. E.g.
    rpm -qa --last

Meanwhile,  "... 2>&1 | more" works for what it was intended for as well.

The issue is likely more's detection of whether it is attached to a tty, not otherwise.
There's certainly nothing exotic or different about rpm's --pipoe implementation.

Comment 5 Jeff Johnson 2006-10-29 01:17:06 UTC

In fact, this command "works" exactly as expected:
    rpm -qa --pipe more

In fact, this command
    rpm -i time-1.7-27.2.2.1.i386.rpm --pipe more
"works" as well, there's just no output on stdout for
more to page.

So I suspect that what you are missing is that --pipe doesn't
handle stderr.

NOTABUG

Comment 6 Panu Matilainen 2007-08-09 20:17:46 UTC

Yup...

> I expected the output of rpm to be piped to more so that I could page through 
> the errors.  It wasn't.  It was frustrating at the time.

--pipe does what it's intended to do, but would be nice if the errors got logged
someplace (bug #203796)