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Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
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A technicians joke worth sharing...of course in my personal opinion
How to catch an elephant in the Africa
MATHEMATICIANS hunt elephants by going to Africa, throwing out everything that is not an elephant, and catching one of whatever is left.
EXPERIENCED MATHEMATICIANS will attempt to prove the existence of at least one unique elephant before proceeding to step 1 as a subordinate exercise.
PROFESSORS OF MATHEMATICS will prove the existence of at least one unique elephant and then leave the detection and capture of an actual elephant as an exercise for their graduate students.
COMPUTER SCIENTISTS hunt elephants by exercising Algorithm A:
Go to Africa.
Start at the Cape of Good Hope.
Work northward in an orderly manner, traversing the continent alternately east and west.
During each traverse pass,
Catch each animal seen.
Compare each animal caught to a known elephant.
Stop when a match is detected.
EXPERIENCED COMPUTER PROGRAMMERS modify Algorithm A by placing a known elephant in Cairo to ensure that the algorithm will terminate.
ASSEMBLY LANGUAGE PROGRAMMERS prefer to execute Algorithm A on their hands and knees.
ENGINEERS hunt elephants by going to Africa, catching gray animals at random, and stopping when any one of them weighs within plus or minus 15 percent of any previously observed elephant.
ECONOMISTS don't hunt elephants, but they believe that if elephants are paid enough, they will hunt themselves.
STATISTICIANS hunt the first animal they see N times and call it an elephant.
CONSULTANTS don't hunt elephants, and many have never hunted anything at all, but they can be hired by the hour to advise those people who do.
OPERATIONSRESEARCHCONSULTANTS can also measure the correlation of hat size and bullet color to the efficiency of elephant-hunting strategies, if someone else will only identify the elephants.
POLITICIANS don't hunt elephants, but they will share the elephants you catch with the people who voted for them.
LAWYERS don't hunt elephants, but they do follow the herds around arguing about who owns the droppings.
SOFTWARELAWYERS will claim that they own an entire herd based on the look and feel of one dropping.
VICEPRESIDENTSOFENGINEERING, RESEARCH, ANDDEVELOPMENT try hard to hunt elephants, but their staffs are designed to prevent it. When the vice president does get to hunt elephants, the staff will try to ensure that all possible elephants are completely prehunted before the vice president sees them. If the vice president does happen to see a elephant, the staff will:
compliment the vice president's keen eyesight and
enlarge itself to prevent any recurrence.
SENIORMANAGERS set broad elephant-hunting policy based on the assumption that elephants are just like field mice, but with deeper voices.
QUALITYASSURANCEINSPECTORS ignore the elephants and look for mistakes the other hunters made when they were packing the jeep.
SALESPEOPLE don't hunt elephants but spend their time selling elephants they haven't caught, for delivery two days before the season opens.
SOFTWARESALESPEOPLE ship the first thing they catch and write up an invoice for an elephant.
HARDWARESALESPEOPLE catch rabbits, paint them gray, and sell them as desktop elephants.