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Top Forums UNIX for Beginners Questions & Answers WHy do we need both append and output directives? Post 303001576 by MadeInGermany on Monday 7th of August 2017 03:20:02 PM
Old 08-07-2017
I doubt this construct can be useful at all.
I even get strange behavior: after the command (yum -y update) is run, it takes one further command from stdin that is run but not passed to the >( ).
Maybe a bug in bash.?
I would rewrite it
Code:
yum -y update | /usr/bin/tee /var/log/file

 

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yum-filter-data(1)														yum-filter-data(1)

NAME
yum filter data plugin SYNOPSIS
yum [options] [command] [package ...] DESCRIPTION
This plugin extends yum with some options, currently just for "update" and "list update" type commands, to allow filters to be placed on which packages should be used based on the data in those packages. Note that due to some of the data being unknown, and thus could possibly match, all unknown data is treated as a match. GENERAL OPTIONS
These are the options added to yum that are available in the "list updates", "info updates", "check-update" and "update" commands. They are: --filter-vendors This option includes packages which have a vendor which matches one of the passed vendor wildcard strings, or is unknown. Note that vendors can have spaces in their value, so "," is the only way to specify multiple vendors as one option argument. --filter-rpm-groups This option includes packages which have a group which matches one of the passed rpm group wildcard strings, or is unknown. Note that rpm groups can have spaces in their value, so "," is the only way to specify multiple rpm groups as one option argument. --filter-packagers This option includes packages which have a packager which matches one of the passed packager wildcard strings, or is unknown. Note that vendors can have spaces in their value, so "," is the only way to specify multiple packagers as one option argument. --filter-licenses This option includes packages which have a license which matches one of the passed license wildcard strings, or is unknown. Note that licenses can have spaces in their value, so "," is the only way to specify multiple licenses as one option argument. --filter-arches This option includes packages which have a arch which matches one of the passed arch wildcard strings, or is unknown. --filter-committers This option includes packages which have a committer which matches one of the passed committer wildcard strings, or is unknown. Note that committers can have spaces in their value, so "," is the only way to specify multiple committers as one option argument. Also, committer values are so loosely formed that they could contain commas too, it is recommended to not do that but you can work around it by using "?". --filter-buildhosts This option includes packages which have a buildhost which matches one of the passed buildhost wildcard strings, or is unknown. --filter-urls This option includes packages which have a url which matches one of the passed url wildcard strings, or is unknown. --filter-package-sizes This option includes packages which have a packagesize which is within one of the passed packagesize ranges, or is unknown. --filter-archive-sizes This option includes packages which have a archivesize which is within one of the passed archivesize ranges, or is unknown. --filter-installed-sizes This option includes packages which have a installedsize which is within one of the passed installedsize ranges, or is unknown. --filter-groups This option includes packages which are in a yum group which matches one of the passed yum group id strings, or is unknown. Note that yum groups can have spaces in their value, so "," is the only way to specify multiple yum groups as one option argument. EXAMPLES
To list all updates that are 1 MB or less use: yum --filter-package-sizes=-1m check-update To apply updates that Dan Walsh has committed use: yum --filter-committers='Dan Walsh *' update To list updates for a specific group use: yum --filter-rpm-groups='App*/Sys*' list updates To apply updates to a specific set of groups use: yum --filter-rpm-groups='App*/System,Devel*/Lib*,System Environment/Base' update To list updates for a set of yum groups use: yum --filter-groups='PostgreSQL Database,Web Server' list updates To apply updates to a specific set of yum groups use: yum --filter-groups='KDE,Core,Printing Support' update SEE ALSO
yum-list-data (1) yum (8) yum.conf (5) AUTHORS
James Antill <james.antill@redhat.com>. BUGS
Currently yum can't filter packages in all of the commands, so for instance "yum list 'yum*'" doesn't get the results filtered. Apart from that there are no bugs, but should you find any, you should first consult the FAQ section on http://yum.baseurl.org/wiki/Faq and if unsuccessful in finding a resolution contact the mailing list: yum-devel@lists.baseurl.org. To file a bug use http://bugzilla.red- hat.com for Fedora/RHEL/Centos related bugs and http://yum.baseurl.org/report for all other bugs. James Antill 04 February 2008 yum-filter-data(1)
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