[CentralOH] 2015-09-18 道場 Scribbles 落書/惡文? growler halwani whitehurst teaching pulse oximeter syslog inotify EULA mutex mkdir lockd nqs Al Gore The Donald TAoCP APUE reentrancy
jep200404 at columbus.rr.com
jep200404 at columbus.rr.com
Sat Sep 19 23:37:36 CEST 2015
Someone brought wild pawpaws that they had gotten on their way to the dojo
and gave some away (again!).
growler micro web-framework
The Ohio Taproom http://theohiotaproom.com/
where pizza crawl begins
2015-10-01 19:00-21:00 (Thursday) (kinda) Grandview Pizza Crawl
wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
The Linux Setup - Jim Whitehurst, President/CEO, Red Hat
14 tips for teaching open source development
Pawpaw season seems later this year than usual.
There were reports of plenty of pawpaws collected 2015-09-16.
Chap releases Python and Smalltalk-inspired language, complete with shrubbery
Someone who wants to develop a smartphone app should periodically check out
There was an event listed for yesterday.
Also check out the following URL periodically.
logging: syslog is the way to go
use logger command with level? and tag? arguments.
logger adds timestamps for free
Does systemd replace or screw up syslog?
inotify (linux only) will give you events as you prefer to receive them
Man Finds $1,000 Prize in EULA
mkdir is handy for implementing locks (mutexes).
Use with a wrapper, so that if code that does the interesting work crashes and
so does not get to remove the lock, that the wrapper will catch the crash and
remove the lock. Only the wrapper creates and removes the lock.
Avoid more and more Sorcerer's apprentices bringing more and more buckets of
To allow up to only n of something, use -x n arguments to mktemp?
(I am missing something here. Does not match man page I read on *buntu.)
Using pid as part of name can be convenient.
-d make a directory instead of a file
--tempdir[=DIR] where to make file or directory
But mkdir is not atomic with various remote filesystems.
I.e., the operating system makes it atomic only if on local filesystem.
To get a lock for multiple computers, have them request lock on one computer,
which does the mkdir thing only on its own local filesystem (albeit on behalf
of multiple remote computers).
This has been solved. See lockd.
Civil war messenger problem:
How does one know that all of ones forces know to attack at the same time?
debugging: binary partitioning: divide and conquer
nqs: network queueing server
More important than his invention of the internet
is Al Gore's invention of techniques, named after himself: algorithms!
Is not just about his mannerisms.
wp:Introduction to Algorithms
Skiena's Algorithms Lectures
The Stony Brook Algorithm Repository
The Algorithm Design Manual 2nd Edition by Steven S. Skiena
Some folks are far far beyond me. The Donald is far far beyond me.
It takes more to write something than to read and understand it.
I struggle to understand what his writings.
wp:Job shop scheduling
Optimal Two- and Three-Stage Production Schedules With Set-up Time Invluded
S. M. Johnson
The Rand Corporation
not wp:Stephen C. Johnson
"Using TSO is like kicking a dead whale down the beach"
Thank you W. Richard Stevens for writing so well.
In Search of America’s Forgotten Fruit
by Andrew Moore
 too bad it's not 04-01: wp:Algorithm#Word_origin
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