Parm Patram » HEADS UP

Turn on agent debugging (VCS)

admin — Tue, 13 Dec 2011 20:48:44 +0000

http://www.symantec.com/business/support/index?page=content&id=HOWTO58833

Solaris fix for boot problems

admin — Tue, 22 Nov 2011 16:23:25 +0000

A kernel patch caused the machine to panic, leaving it in a confused state. I was able to boot from a CD and back out the patch, but it did not update the boot archive, even after issuing
/sbin/bootadm update-archive -R /a

to fix:

Boot into the disk failsafe, then run:

/a/boot/solaris/bin/create_ramdisk -R /a

fix terminal when in single user mode (Solaris)

admin — Thu, 17 Nov 2011 20:28:22 +0000

ksh -o vi
export TERM=vt100
/usr/openwin/bin/resize
or, If booted from CD or in failsafe:
/a/usr/openwin/bin/resize

Set ethtool options in ifcfg-ethX file

admin — Tue, 14 Jun 2011 11:03:46 +0000

ETHTOOL_OPTS=”autoneg off speed 100 duplex full”

Last ditch to open a database after losing all members of CURRENT redo log group

admin — Mon, 16 May 2011 00:53:29 +0000

_allow_resetlogs_corruption=TRUE

This will at least allow you to open the database, then perform an export. It is NOT recommended that the database continue production operations as it will definitely crash in the near future.

Setuid shell script

admin — Thu, 24 Feb 2011 16:54:13 +0000

The script will need to run thru a wrapper, or the OS will ignore the setuid bit altoghether. Compile the following C program and make it setuid, and it will work:

#include 
#include 

int main(int argc, char *argv[])
{
argv[0] = "some_script_path";

setreuid(geteuid(), -1);
execv(argv[0], argv);
exit(1);
}

Sun Blade ILOM

admin — Tue, 22 Feb 2011 18:32:08 +0000

connecting to sun blades

start /CH/blade/SP/cli
start SP/console

X Authentication

admin — Tue, 22 Feb 2011 16:15:19 +0000

‘xauth list’ will give the current tokens for the first login user
SOANDSO/unix:10 MIT-MAGIC-COOKIE-1 498e25150e75b1c319278813d853b1ca

you can add some or alll of them to a second login user:

xauth add SOANDSO/unix:10 MIT-MAGIC-COOKIE-1 498e25150e75b1c319278813d853b1ca

Perl network daemon for testing firewalls, etc

admin — Wed, 16 Feb 2011 19:28:25 +0000

#!/usr/bin/perl -w
# server.pl
#--------------------

use strict;
use Socket;

# use port 7890 as default
my $port = shift || 7890;
my $proto = getprotobyname('tcp');

# create a socket, make it reusable
socket(SOCKET, PF_INET, SOCK_STREAM, $proto)
or die "Can't open socket $!\n";
setsockopt(SOCKET, SOL_SOCKET, SO_REUSEADDR, 1)
or die "Can't set socket option to SO_REUSEADDR $!\n";

# bind to a port, then listen
bind( SOCKET, pack( 'Sn4x8', AF_INET, $port, "\0\0\0\0" ))
or die "Can't bind to port $port! \n";
listen(SOCKET, 5) or die "listen: $!";
print "SERVER started on port $port\n";

# accepting a connection
my $client_addr;
while ($client_addr = accept(NET_SOCKET, SOCKET)) {
# send them a message, close connection
print NEW_SOCKET "Smile from the server";
close NEW_SOCKET;
}

Solaris equivalent of ethtool

admin — Wed, 16 Feb 2011 16:33:38 +0000

for i in `ndd -get /dev/${DEV} \? | awk '{print $1}'| grep ^[a-z]`;
do
echo -n "$i:"; ndd -get /dev/${DEV} $i;
done