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IMHO there are three Unix tools that can spell the difference between really good programmer or sysadmin and just above average one (even if the latter has solid knowledge of shell and Perl, knowledge of shell and Perl is necessary but not sufficient):
This two tools can also be used as a fine text in interviews on advanced Unix-related positions if you have several similar candidates. Other things equal, their knowledge definitely demonstrate the level of Unix culture superior to the average "command line junkies" level ;-)
Overview of books about GNU/open source tools can be found in Unix tools bibliography. There not that much good books on the subject, still even average books can provide you with insight in usage of the tool that you might never get via daily practice.
Please note that Unix is a pretty complex system and some aspects of it are non-obvious even for those who have more than ten years of experience.
Dr. Nikolai Bezroukov
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Linux, Unix, -etc Using the m4 Macro Processor nice m4 intro by Paul Dunne
"What is it about m4 that makes it so useful, and yet so overlooked? m4 -- a macro processor -- unfortunately has a dry name that disguises a great utility. A macro processor is basically a program that scans text and looks for defined symbols, which it replaces with other text or other symbols."
GNU macro processor - Table of Contents
docs.sun.com Programming Utilities Guide/m4
m4 macro processor Caldera
Programming in standard C and C++
m4 macro processor
Defining macros
Quoting
Arguments
Arithmetic built-ins
File inclusion
Diversions
System command
Conditionals
String manipulation
Printing
General Programming Concepts Writing and Debugging Programs - m4 Macro Processor Overview
This chapter provides information about the m4 macro processor, which is a front-end processor for any programming language being used in the operating system environment.
The m4 macro processor is useful in many ways. At the beginning of a program, you can define a symbolic name or symbolic constant as a particular string of characters. You can then use the m4 program to replace unquoted occurrences of the symbolic name with the corresponding string. Besides replacing one string of text with another, the m4 macro processor provides the following features:
- Arithmetic capabilities
- File manipulation
- Conditional macro expansion
- String and substring functions
The m4 macro processor processes strings of letters and digits called tokens. The m4 program reads each alphanumeric token and determines if it is the name of a macro. The program then replaces the name of the macro with its defining text, and pushes the resulting string back onto the input to be rescanned. You can call macros with arguments, in which case the arguments are collected and substituted into the right places in the defining text before the defining text is rescanned.
The m4 program provides built-in macros such as define. You can also create new macros. Built-in and user-defined macros work the same way.
configure.in examples see also the Tcl/Tk distributionacmacros (smr_macros)
Macros for GNU autoconf. The highlight is a set of three macros to ease checking for 3rd party libraries. The macros were originally available here as acmacros.
Matthew Langston took the macros, cleaned them up, and wrote documentation for them. This much-improved version is now known as smr_macros, available here or in Matthew Langston's SLAC archive. (Matthew also distributes RPMs)
Less sucks less more than more.
That's why I use more less, and less more.
Society
Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers : Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism : The Iron Law of Oligarchy : Libertarian Philosophy
Quotes
War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda : SE quotes : Language Design and Programming Quotes : Random IT-related quotes : Somerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose Bierce : Bernard Shaw : Mark Twain Quotes
Bulletin:
Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 : Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law
History:
Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds : Larry Wall : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOS : Programming Languages History : PL/1 : Simula 67 : C : History of GCC development : Scripting Languages : Perl history : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history
Classic books:
The Peter Principle : Parkinson Law : 1984 : The Mythical Man-Month : How to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Hater’s Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite
Most popular humor pages:
Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor
The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D
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Last modified: April, 23, 2019
