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     1.3 @@ -0,0 +1,339 @@
     1.4 +.TL
     1.5 +\fR\s-6Why\s0\fP
     1.6 +.br
     1.7 +the Unix Philosophy
     1.8 +.br
     1.9 +.vs -4
    1.10 +\fR\s-6(still) matters\s0\fP
    1.11 +.AU
    1.12 +.ft R
    1.13 +.sp 1.2i
    1.14 +.ps 11
    1.15 +markus schnalke <meillo@marmaro.de>
    1.16 +
    1.17 +
    1.18 +.S "goals of this talk
    1.19 +.I
    1.20 +introduce the Unix Phil
    1.21 +.I
    1.22 +explain why most modern software is crap
    1.23 +.I
    1.24 +explain why the Unix Phil leads to better software
    1.25 +.I
    1.26 +convince you that good software is of matter
    1.27 +.sp 2
    1.28 +.I
    1.29 +make you think
    1.30 +
    1.31 +
    1.32 +.S "roadmap
    1.33 +.I
    1.34 +Historical background
    1.35 +.I
    1.36 +What is the Unix Philosophy?
    1.37 +.I
    1.38 +The Unix Phil after Gancarz
    1.39 +.I
    1.40 +Discussion on real world examples
    1.41 +.I
    1.42 +The Unix Phil is more than software dev guidelines
    1.43 +
    1.44 +
    1.45 +
    1.46 +.S "me and the UP
    1.47 +.LP
    1.48 +first contact: through the suckless project
    1.49 +.LP
    1.50 +``cat -v Considered Harmful''
    1.51 +.LP
    1.52 +``The Unix and the Echo''
    1.53 +.LP
    1.54 +``The Unix Programming Environment''
    1.55 +.sp 1
    1.56 +.LP
    1.57 +better understanding through digging in the past
    1.58 +
    1.59 +
    1.60 +
    1.61 +
    1.62 +
    1.63 +.P "historical background
    1.64 +
    1.65 +
    1.66 +
    1.67 +
    1.68 +.S "historical background
    1.69 +.I
    1.70 +the late 60s and early 70s
    1.71 +.I
    1.72 +operating systems are complex
    1.73 +.I
    1.74 +MULTICS just failed
    1.75 +.I
    1.76 +Brooks' ``The Mythical Man-Month''
    1.77 +.I
    1.78 +a lot of different hardware
    1.79 +.I
    1.80 +limited computing power
    1.81 +.I
    1.82 +textual input and output (line printers)
    1.83 +
    1.84 +
    1.85 +.S "everything is a file
    1.86 +.LP
    1.87 +is the(?) basic concept in Unix (and even more in Plan9)
    1.88 +.LP
    1.89 +made simple operating systems possible
    1.90 +.LP
    1.91 +it is not covered by the Unix Phil; the Unix Phil is on a different level
    1.92 +.sp 2
    1.93 +.LP
    1.94 +Unix is mainly two things:
    1.95 +.I
    1.96 +an operating system (system calls)
    1.97 +.I
    1.98 +a toolchest (coreutils)
    1.99 +
   1.100 +
   1.101 +
   1.102 +.P "What is the Unix Phil
   1.103 +
   1.104 +
   1.105 +
   1.106 +.S "What is the Unix Phil *itself*?
   1.107 +.LP
   1.108 +``The Unix philosophy is a set of cultural norms and philosophical
   1.109 +approaches to developing software based on the experience of
   1.110 +leading developers of the Unix operating system.''
   1.111 +(wikipedia)
   1.112 +.sp 2
   1.113 +.LP
   1.114 +How the inventors of Unix write software.
   1.115 +.LP
   1.116 +Common things of classic Unix tools.
   1.117 +.sp 2
   1.118 +.LP
   1.119 +difficult to define
   1.120 +
   1.121 +
   1.122 +.S "Unix Phil vs. SW dev processes
   1.123 +.LP
   1.124 +the Unix Phil
   1.125 +.I
   1.126 +much: *what* to program
   1.127 +.I
   1.128 +few: *how* to program
   1.129 +
   1.130 +.LP
   1.131 +Software developments processes:
   1.132 +.I
   1.133 +few: *what* to program
   1.134 +.I
   1.135 +much: *how* to program
   1.136 +
   1.137 +.sp 2
   1.138 +.LP
   1.139 +Extreme Programming is like the Unix Phil
   1.140 +but with more *how* than *what*,
   1.141 +and with formalisms
   1.142 +
   1.143 +
   1.144 +
   1.145 +
   1.146 +
   1.147 +.S "What is the Unix Phil?
   1.148 +.I
   1.149 +Doug McIlroy (1978)
   1.150 +.I
   1.151 +Mike Gancarz: ``The Unix Philosophy'' (1994)
   1.152 +.I
   1.153 +Eric S. Raymond: ``The Art of Unix Programming'' (2003)
   1.154 +.sp 2
   1.155 +.I
   1.156 +Richard Gabriel: ``Worse is Better'' (1989)
   1.157 +
   1.158 +
   1.159 +.S "Doug McIlroy
   1.160 +.LP
   1.161 +This is the Unix philosophy:
   1.162 +.I
   1.163 +Write programs that do one thing and do it well.
   1.164 +.I
   1.165 +Write programs to work together.
   1.166 +.I
   1.167 +Write programs to handle text streams, because that is a universal interface.
   1.168 +
   1.169 +
   1.170 +.S "Mike Gancarz: ``The Unix Philosophy''
   1.171 +.I
   1.172 +Small is beautiful.
   1.173 +.I
   1.174 +Make each program do one thing well.
   1.175 +.I
   1.176 +Build a prototype as soon as possible.
   1.177 +.I
   1.178 +Choose portability over efficiency.
   1.179 +.I
   1.180 +Store data in flat text files.
   1.181 +.I
   1.182 +Use software leverage to your advantage.
   1.183 +.I
   1.184 +Use shell scripts to increase leverage and portability.
   1.185 +.I
   1.186 +Avoid captive user interfaces.
   1.187 +.I
   1.188 +Make every program a filter.
   1.189 +.sp 1
   1.190 +.LP
   1.191 +plus ten lesser tenets
   1.192 +
   1.193 +
   1.194 +
   1.195 +
   1.196 +.P "The Unix Phil after Gancarz
   1.197 +
   1.198 +.S "Small is beautiful.
   1.199 +.LP
   1.200 +foo
   1.201 +
   1.202 +
   1.203 +.S "Make each program do one thing well.
   1.204 +.LP
   1.205 +foo
   1.206 +
   1.207 +
   1.208 +.S "Build a prototype as soon as possible.
   1.209 +.LP
   1.210 +foo
   1.211 +
   1.212 +
   1.213 +.S "Choose portability over efficiency.
   1.214 +.LP
   1.215 +foo
   1.216 +
   1.217 +
   1.218 +.S "Store data in flat text files.
   1.219 +.LP
   1.220 +foo
   1.221 +
   1.222 +
   1.223 +.S "Use software leverage to your advantage.
   1.224 +.LP
   1.225 +foo
   1.226 +
   1.227 +
   1.228 +.S "Use shell scripts to increase leverage and portability.
   1.229 +.LP
   1.230 +foo
   1.231 +
   1.232 +
   1.233 +.S "Avoid captive user interfaces.
   1.234 +.LP
   1.235 +foo
   1.236 +
   1.237 +
   1.238 +.S "Make every program a filter.
   1.239 +.LP
   1.240 +foo
   1.241 +
   1.242 +
   1.243 +
   1.244 +
   1.245 +
   1.246 +.P "real world examples
   1.247 +
   1.248 +
   1.249 +.S "various
   1.250 +.LP
   1.251 +who uses
   1.252 +.CW "grep -R
   1.253 +?
   1.254 +
   1.255 +.sp 1
   1.256 +.LP
   1.257 +.CW "cat -v
   1.258 +
   1.259 +.sp 1
   1.260 +.LP
   1.261 +pagers are taken for granted
   1.262 +
   1.263 +.sp 1
   1.264 +.LP
   1.265 +what about the readline?
   1.266 +
   1.267 +
   1.268 +
   1.269 +.S "find -printf
   1.270 +.LP
   1.271 +How to reformat the output of find(1) to have ``FILENAME PATH''
   1.272 +instead of ``PATH/FILENAME''?
   1.273 +
   1.274 +.LP
   1.275 +the ``easy'' way:
   1.276 +\f(CWfind /dir -printf "%P %h\en"\fP
   1.277 +
   1.278 +.LP
   1.279 +the ``good'' way:
   1.280 +.br
   1.281 +.CW "\s-1find /dir | sed 's,\e(.*\e)/\e(.*\e),\e2 \e1,'
   1.282 +
   1.283 +.LP
   1.284 +The difference shows off when one wants, for instance,
   1.285 +the path to be manipulated further.
   1.286 +
   1.287 +
   1.288 +.S "MH / nmh
   1.289 +.LP
   1.290 +a Mail User Agent (MUA)
   1.291 +
   1.292 +
   1.293 +.S "uzbl
   1.294 +.LP
   1.295 +a web browser that adheres to the Unix Phil
   1.296 +
   1.297 +
   1.298 +
   1.299 +
   1.300 +
   1.301 +.P "more than software dev guidelines
   1.302 +
   1.303 +
   1.304 +
   1.305 +
   1.306 +
   1.307 +.P "literature
   1.308 +
   1.309 +
   1.310 +.S literature
   1.311 +.I
   1.312 +``\fBText Processing and Typesetting with Unix\fP''
   1.313 +by Barron and Rees
   1.314 +explains everything pretty good (focus on
   1.315 +.CW nroff )
   1.316 +.I
   1.317 +``\fBHeirloom Documentation Tools Nroff/Troff User's Manual\fP''
   1.318 +by Ossanna, Kernighan, and Ritter
   1.319 +is more a technical reference
   1.320 +.I
   1.321 +Various documents collected on
   1.322 +.CW \s-2http://troff.org\s+2
   1.323 +
   1.324 +
   1.325 +.S
   1.326 +.LP
   1.327 +this talk was prepared using tools of the Heirloom project:
   1.328 +.CW \s-2http://heirloom.sf.net\s+2
   1.329 +.LP
   1.330 +the slides macros are based on
   1.331 +.br
   1.332 +.CW \s-2http://repo.cat-v.org/troff-slider/\s+2
   1.333 +.sp
   1.334 +
   1.335 +.LP
   1.336 +the slides are available on my website
   1.337 +.CW \s-2http://marmaro.de/docs\s+2
   1.338 +and on
   1.339 +.CW \s-2http://ulm.ccc.de/ChaosSeminar/\s+2
   1.340 +.sp
   1.341 +
   1.342 +2010-03-08