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Shell trick: track new tcp connections per second in Linux

admin — Thu, 11 Feb 2010 02:35:08 +0000

This little snippet is for when you want to see new active connections per second, not concurrent established, as most tools show you:

C=0; while true; do echo "new connections: $C"; c1=`netstat -s -t|grep "active connections openings"|awk '{print $1;}'`; sleep 1; c2=`netstat -s -t|grep "active connections openings"|awk '{print $1;}'`; C=`expr $c2 - $c1` ; done

Enjoy!

Introducing: Business Engineering, the evolution of Business Intelligence

admin — Thu, 11 Feb 2010 02:33:48 +0000

Define intelligence:

Intelligence is a characteristic of thinking, but it is also a thing to be acquired. This substance is different than information. Intelligence is information that has been discovered, processed, and presented in a way that encourages its other definition: disciplined, insightful thinking.

Define engineering:

Engineering is the deliberate, analytical, scientific application of intelligence to the design or modification of a system.

Most data floated as Business Intelligence is more accurately labeled business information. It becomes the substance Business Intelligence when superior tools expose patterns and trends that are actionable.

Business Engineering is the practice of managing decisions based on critical analysis of intelligence about internal and external factors influencing the business.

RescueTime allows businesses to tweak the previously hidden algorithms that drive productivity of workforces. Data is scientifically gathered, and innovatively processed and presented in real time.

Businesses can re-balance work loads, uncover inefficiencies, and identify stalled or unusually successful projects while they are happening. Smart managers can introduce a measure of science into management itself: easily visualized historical information exposes trends one week to the next. Try several workflow processes, prove which one works best for each team.

Ruby for are these chars in this string…

admin — Thu, 11 Feb 2010 02:32:57 +0000

I find myself wanting to know if the characters in one string are in another.
For example, if you have a key space for a string key name, making sure the provided key is valid.

require 'set' def chars_subset_of? checkme, inme checkme.split(//).to_set.subset? inme.split(//).to_set end

You could also toss this inside class String to dynamically add the method

require 'set' def chars_subset_of? other_string if other_string.class == String self.split(//).to_set.subset? other_string.split(//).to_set else # just try self.split(//).to_set.subset? other_string.to_set end end