Russ Greenwald

In .profile (if you use MacPorts) or .bash_profile

export TERM=xterm-color alias ls=’ls -G’ alias ll=’ls -hl’

/usr/share/horde/config/conf.php

Change the following line;

$conf[‘auth’][‘checkip’] = true;

to be this;

$conf[‘auth’][‘checkip’] = false;

Nagios + Cacti + NPC Plugin Install Instructions on Centos 5 I will post a full Nagios 3.x installation instruction later (yum install nagios). For the below, I will assume you have Nagios 3.x running and have a basic knowledge of Linux, file paths, commands, etc. Continue reading

http://howto.wired.com/wiki/Hack_Your_Apple_TV_With_Boxee

The two best tools to use when all seems lost

• Does your machine not boot properly
• Can you not see your desktop
• Does your web browser tell you that you have a virus and need to download some removal software
• These are all symptoms of spyware, a worm, or a virus

The two best tools I’ve used to solve most issues are sbybot and combo fix, linked below.

http://www.bleepingcomputer.com/combofix/how-to-use-combofix

http://www.safer-networking.org/en/download/index.html

Go to

Adobe CS3\Photoshop\Adobe CS3\payloads\AdobePhotoshop10en_US_volume\AdobePhotoshop10en_US_volume.proxy.xm l

“Server2003”:{“Exclude”:true}

Change it to

“Server2003”:{“Require”:true}

• Installed using Yum Install Nagios
• Installed to /etc/nagios
  • nagios.cfg defines the commands file and location of the other config files
  • commands.cfg defines the scripts located in /usr/lib or lib64/nagios/plugins/ to be run
    • i.e. $USER1$/check_http -H $HOSTADDRESS$ -S -a nagioscheck:nag1oscheck
  • Within /etc/nagios/etc there are hosts.cfg, services.cfg, servicegroups.cfg, hostgroups.cf, contacts.cfg, and contactgroups.cfg
  • hosts.cfg contains any device that needs to be monitored
  • services.cfg defines the specific monitoring service and warning/critical parameters if any
  • servicgroups.cfg is used to organize in the web view
  • hostgroups.cfg matches the hosts in hosts.cfg to the services in services.cfg
  • In order to login to nagios, the ldap user must be listed in the contacts.cfg and assigned to a contactgroup
• After making changes in nagios run “/usr/bin/nagios -v /etc/nagios/nagios.cfg” to make sure there are not any mistakes
• service nagios restart

Richard Hamming “You and Your Research”

Transcription of the Bell Communications Research Colloquium Seminar 7 March 1986

J. F. Kaiser Bell Communications Research 445 South Street Morristown, NJ 07962-1910 jfk@bellcore.com

At a seminar in the Bell Communications Research Colloquia Series, Dr. Richard W. Hamming, a Professor at the Naval Postgraduate School in Monterey, California and a retired Bell Labs scientist, gave a very interesting and stimulating talk, `You and Your Research’ to an overflow audience of some 200 Bellcore staff members and visitors at the Morris Research and Engineering Center on March 7, 1986. This talk centered on Hamming’s observations and research on the question “Why do so few scientists make significant contributions and so many are forgotten in the long run?” From his more than forty years of experience, thirty of which were at Bell Laboratories, he has made a number of direct observations, asked very pointed questions of scientists about what, how, and why they did things, studied the lives of great scientists and great contributions, and has done introspection and studied theories of creativity. The talk is about what he has learned in terms of the properties of the individual scientists, their abilities, traits, working habits, attitudes, and philosophy. Continue reading

Logrotate is an amazing tool for linux admins.  It is service called by cron in the daily cron job.  Logrotate gives you options on how you want to manage any log file.

• Archive
• Compress
• Reset
• etc.

To configure logrotate for specific log files from Apache, tomcat, subversion, hudson, etc.

• Go to /etc/logrotate.d
• Create seperate configuration files for each application’s log file
• /var/log/http/* { create 0640 apache apache   #This line defines who is going to own the new log file after the old one is archived and compressed missingok daily # Run this daily rotate 7 # Rotate logs every 7 days, from line above compress # Compress log files }
• Save and check.  To test “logrotate -f /etc/logrotate.d/filename”