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Full Discussion: Suppressing errors from command output
Operating Systems HP-UX Suppressing errors from command output Post 303017221 by anaigini45 on Friday 11th of May 2018 03:30:35 AM
Old 05-11-2018
Suppressing errors from command output
Hi,

When I run the command "print_manifest | grep "Main Memory", I get the note :

Code:
# /opt/ignite/bin/print_manifest | grep "Main Memory"
NOTE: Could not read the /etc/resolv.conf file.
    Main Memory:        196498 MB
#

How do I suppress the part :

NOTE: Could not read the /etc/resolv.conf file.

The file /etc/resolv.conf does not exist in the server, because we do not use DNS for our hostname resolution. However, this NOTE does not pop once I create the resolv.conf file. But is this a good solution?

Please advise.
 

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LEARN ABOUT DEBIAN

rdnssd

RDNSSD(8)						      System Manager's Manual							 RDNSSD(8)

NAME

       rdnssd - IPv6 Recursive DNS Server discovery Daemon

SYNOPSIS

       rdnssd [-f] [-H merge-hook] [-r resolv-file] [-p pidfile] [-u username]

DESCRIPTON

       rdnssd  is a daemon program providing client-side support for DNS configuration using the Recursive DNS Server (RDNSS) option, as described
       in RFC 5006.  Its purpose is to supply IPv6 DNS resolvers through stateless autoconfiguration, carried by Router Advertisements.

       rdnssd parses RDNSS options and keeps track of resolvers to write nameservers entries to a resolv.conf(5) configuration file.  By  default,
       it  writes its own separate file, and may call an external hook to merge it with the main /etc/resolv.conf. This is aimed at easing coexis-
       tence with concurrent daemons, especially IPv4 ones, updating /etc/resolv.conf too.

       On Linux, since version 2.6.24, rdnssd takes advantage of a new netlink interface, forwarding RDNSS options  validated  by  the	kernel	to
       userland.  Otherwise, it merely listens to all ICMPv6 traffic through a raw socket.

OPTIONS

       -f or --foreground
	      Do not detach from the console. Run the program in the foreground.

       -H merge-hook or --merge-hook merge-hook
	      Execute this hook whenever resolv.conf is updated. If this option is not specified, then no hook will be called.

       -h or --help
	      Display some help and exit.

       -p pidfile or --pidfile pidfile
	      Override the location of the pidfile.

       -r resolv-file or --resolv-file resolv-file
	      Set the path to the generated resolv.conf file.

       -u username or --user username
	      Override the user that the program will run as. By default, it runs as nobody.

       -V or --version
	      Display program version and license and exit.

FILES

       /etc/rdnssd/merge-hook
	      A basic merge hook shipped with rdnssd, to be called with the -H option.

       /var/run/rdnssd/resolv.conf
	      The default resolv.conf(5) file that rdnssd writes its configuration to.

       /var/run/rdnssd.pid
	      The process-id file.

BUGS

       rdnssd  does  not  keep track of the lifetimes of the routers associated with some DNS resolvers, whereas it should to strictly comply with
       RFC 5006.

       When rdnssd uses a raw socket instead of the netlink kernel interface, it does not validate received Neighbor Discovery traffic in any way.
       For  example,  it  will always consider Router Advertisement packets, whereas it should not if the host is configured as a router. When the
       netlink interface is used, such validation is done by the kernel.

SEE ALSO

       resolv.conf(5), rdisc6(8), ipv6(7)

AUTHOR

       Pierre Ynard <linkfanel at yahoo.fr>

       $Id: rdnssd.8-in 575 2007-12-29 21:55:43Z linkfanel $

       http://www.remlab.net/ndisc6/

rdnssd					       $Date: 2007-12-29 23:55:43 +0200 (Sat, 29 Dec 2007) $					 RDNSSD(8)
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