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Verifying debian images signatures and checksums

Verifying signatures

Debian's CD verification page doesn't explain how to find and use the keyring from the package.

This page will explain how to get the keyring package and use it to verify the gpg signatures for the checksum files if you are running debian. The directions will likely work for any debian-based distribution.

Install debian-keyring ( sudo apt install debian-keyring ). Also install gnupg if it isn't already installed ( see GnuPG sidebar for details ).

Monitoring, bluetooth beacons and DEFCON for August PLUG mtg

Chris from Elastic's Kibana team will demo his not yet released project on Alerting and Rhythm ( a server metrics UI ).

Ed will give us an intro to Eddystone Bluetooth Beacons. Perhaps he will talk about the insecurity of most

Phil will give us a short review of his DEFCON trip. Speaking of DEFCON, perhaps Ed will talk about the insecurity of bluetooth smart locks.

scalable log storage and analysis at PLUG

This Thursday Kibana creator Rashid Khan will talk scalable log storage and analysis at PLUG. His talk will cover patterns for log shipping, the problems in traditional centralized log storage, as well as issues with syslog shipping overall. We'll explore the options in the open source space, and define a stack that can be gradually merged into a legacy syslog network, with further optimizations as we later spin down the legacy redundant logging infrastructure.

comparing strings in the shell

While creating materials for my bash class I needed to create some globbing exercises for my students.

It occured to me that a string operator and a comparison to the null string can be used to check if something is a substring of another value.

Sure, you can use Substring Expansion to see if the substring is at a known location such as "Does the value of $foo start with 'bar'?", but length and location are often unknown.

Say, for instance, I wanted to know if it's a word a Dalek would shriek? Easy to do with regular expressions: grep ate$ /usr/share/dict/words.

CentOS Dojo this Friday in Scottsdale

CentOS has started a new series of one day conferences. The second CentOS Dojo is taking place in Scottsdale this Friday. Karanbir Singh is in town to lead the conference.

Scheduled talks cover topics such as Logstash ( scalable log management and searching ), Sensu ( scalable monitoring framework ), CentOS Linux kernel tuning, high volume metrics collection, CentOS and Xen virtualization, ARM architecture servers and SSH.

new modules for shell scripting class

Added several modules to my shell scripting class tonight. Added a couple that had been recently been created. Also added a couple I created tonight. Good work on a couple others as well, but they're not yet going online. Working on a lab exercise now. It should be available for tomorrow.

giving Nginx presentation as SCaLE

SCaLE has once again accepted one of my talk proposals. This year they've tagged me to talk about Nginx.

SCaLE 10x call for proposals ends Thursday

SCaLE's 10x call for proposals is closing Thursday. There is a bit of effort required for speaker registration, so don't wait until Thursday night to start.

Note that SCaLE 10x is a litte earlier in the year than past SCaLE conferences as it's now in January.

SCaLE 10x: January 20-22, 2012 at the Hilton Los Angeles Airport Hotel.

ABLEconf 2012 Call for Participation is open

The ABLEconf call for participation is open. We're looking for technology experts and business leaders to discuss how open technologies can help transform Arizona businesses.

This year we're allowing tutorials, panels, labs and hackfests in addition to presentations. Submit something interesting.

Early bird deadline is 2011Nov20.

SCaLE design contest ends Friday, 2011Nov04

For its 10th anniversary SCaLE is running an art contest. The winner gets a free trip, including airfare within the continental US, to Los Angeles for SCaLE 10x.

Look to SCaLE's page on the contest for details.

SCalE 10x is 2012Jan20-22.

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