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Bug 679833 - [RFE] tailf should support `-n 0`
[RFE] tailf should support `-n 0`
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: util-linux-ng (Show other bugs)
6.1
Unspecified Unspecified
low Severity low
: rc
: ---
Assigned To: Karel Zak
Branislav Blaškovič
: FutureFeature
Depends On:
Blocks: 836160 840699
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Reported: 2011-02-23 11:28 EST by Michal Nowak
Modified: 2013-03-07 21:11 EST (History)
5 users (show)

See Also:
Fixed In Version: util-linux-ng-2.17.2-12.8.el6
Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2013-02-21 05:22:25 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:0517 normal SHIPPED_LIVE Low: util-linux-ng security, bug fix and enhancement update 2013-02-20 16:29:06 EST

  None (edit)
Description Michal Nowak 2011-02-23 11:28:12 EST 
Description of problem:

tail supports `-n 0` in it's `-f` "mode":

  tail -f -n 0 file

so should tailf:

[newman@dhcp-25-28 tmp]$ tailf -n 0 file 
tailf: invalid number of lines

Thus I propose tailf to be able to print out zero-length output from watched log file.

(Sorry to put it here, I failed to find upstream Bugzilla and didn't want to write o m-l w/o patch.)
Comment 2 Karel Zak 2011-03-18 04:54:30 EDT 
Fixed by upstream commit 127b12dcf6bd1a150fa2ebdec3161fcddab9ada6. It should be possible to backport the patch to RHEL6.
Comment 4 Suzanne Yeghiayan 2012-01-31 16:17:14 EST 
This request was evaluated by Red Hat Product Management for inclusion in the
current release of Red Hat Enterprise Linux. Because the affected component is
not scheduled to be updated in the current release, Red Hat is unfortunately
unable to address this request at this time.  It has been proposed for the next
release. If you would like it considered as an exception in the current
release, please ask your support representative.
Comment 11 errata-xmlrpc 2013-02-21 05:22:25 EST 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-0517.html
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