Lab46 Wiki

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<WRAP round centeralign box>STATUS updates</WRAP>

======TODO======

  * update grade not-z scripts to handle/be aware of winter terms
  * update system page for (new)www
    * include information on db server
  * upgrade mail VM to jessie/opensmtpd
  * upgrade LDAP VMs to jessie
  * create new router, using OpenBSD 5.7
  * scripts to write:
    * user homedir backup pruning script
    * deploy studentlistcreate as a cron job once again
    * machine backup pruning script
    * status page monthly cycle script
    * revive **gimmeh** script, now that text access seems possible
  * manual pages to write:
    * lab46 usage tutorial
      * include mercurial repository checkout info
      * include irc class chat tutorial
    * data structures, sll/dll library functions as their own manual pages

======URLs======

Some links of interest:

  * [[http://www.llvm.org/|LLVM]]
  * [[http://www.reocities.com/harpin_floh/glglobe_page.html|GLglobe]]
  * [[http://www.heavens-above.com/|Heavens Above]]
  * http://wiki.debian.org/kristian_jerpetjoen
  * http://www.webupd8.org/2010/11/alternative-to-200-lines-kernel-patch.html
  * http://myproxylists.com/nix-brute-force
  * [[haas/docs/plan9|My Plan9 Documentation page]]
  * [[haas/system/sokraits_halfadder.offbyone.lan|The Sokraits/Halfadder System Documentation page]]
  * http://www.egghelp.org/commands/channels.htm
  * http://stackoverflow.com/questions/470617/get-current-date-and-time-in-php
  * http://www.rjsystems.nl/en/2100.php
  * [[http://bitsavers.trailing-edge.com/pdf/|BitSavers]]
  * [[http://mir.aculo.us/2010/06/04/making-an-ipad-html5-app-making-it-really-fast/|Time Zone HTML5 app]]
  * http://toic.org/2009/01/18/reverse-ssh-port-forwarding/
  * Divergent Thinking
    * http://en.wikipedia.org/wiki/Divergent_thinking
    * http://faculty.washington.edu/ezent/imdt.htm
  * https://help.ubuntu.com/community/Installation/QemuEmulator
  * Socket Programming
    * http://www.linuxhowtos.org/C_C++/socket.htm
    * http://www.few.vu.nl/~jms/socket-info.html
    * http://www.lowtek.com/sockets/
    * http://www.tenouk.com/Module40.html
    * http://www.tenouk.com/Module42.html
    * http://www.tenouk.com/Module43a.html
  * ALIX
    * http://markshroyer.com/guides/router/
    * http://markshroyer.com/2010/12/openbsd-alix-via-ubuntu/
    * http://www.martinmellor.com/freebies/pinouts/IDE44_2_5_pinout.htm (IDE 44-pin pin-out)
  * BeagleBoard
    * http://elinux.org/BeagleBoardDebian
  * Xen
    * http://www.tumfatig.net/20110125/running-openbsd-on-xen/ (OpenBSD HVM)
    * https://wiki.debian.org/Xen
  * http://www.mydigitallife.info/fix-gmail-imap-invalid-credentials-or-web-login-requires-failure-error/
  * http://manoharvanga.com/hackme/
  * http://chneukirchen.github.com/sabotage/
  * http://www.linusakesson.net/programming/pipelogic/index.php
  * Free Data Structures eBook: http://dotnetslackers.com/Community/files/folders/data-structures-and-algorithms/entry30283.aspx
  * Polyphasic Sleep and Napping
    * http://priceonomics.com/the-nasa-studies-on-napping/
    * http://www.opinionspost.com/longevity-greek-island-way/
    * http://io9.com/the-science-behind-power-naps-and-why-theyre-so-damne-1401366016
  * Brain Hacks
    * http://www.cracked.com/article_20166_5-brain-hacks-that-give-you-mind-blowing-powers.html?wa_user1=4&wa_user2=Science&wa_user3=article&wa_user4=recommended
  * BASH sockets
    * http://hacktux.com/bash/socket
    * http://terminallinux.org/p/69/
  * Debian Jessie daily builds (June 25th): http://d-i.debian.org/daily-images/amd64/20140625-00:18/netboot/gtk/debian-installer/amd64/
  * NFSv4: https://help.ubuntu.com/community/NFSv4Howto
  * Nettle/libhogweed crypto: http://www.lysator.liu.se/~nisse/nettle/nettle.html#Example
  * Debian RAMdisks: http://reboot.pro/topic/14547-linux-load-your-root-partition-to-ram-and-boot-it/
  * Zeo
    * https://forum.quantifiedself.com/showthread.php?tid=1421
    * http://www.cpaptalk.com/viewtopic/t98659/New-Zeo-Sleep-Monitor-for-Bedside-Units.html
    * https://github.com/zeoeng/zeo-android-api
    * http://eric-blue.com/2013/06/09/life-beyond-zeo/
  * rxvt / .Xresources
    * http://www.askapache.com/linux/rxvt-xresources.html
======Other Days======
======December 2nd, 2015======
=====OpenBSD LDAP authentication via XDM=====
So this has been slightly enigmatic... trying to get logins working via xdm (it seemed to not be querying LDAP).

I re-checked my config, using the best reference:

  * https://www.talamasca.pl/projects/talamasca/wiki/OpenBSD_with_LDAP_-_system_authentication

I tried checking the logs.

But, the issue was apparently NOT LDAP.

This helpful post clued me in:

  * http://webcache.googleusercontent.com/search?q=cache:bzDSclBupEYJ:www.monkey.org/openbsd/archive/ports/0405/msg00421.html+&cd=7&hl=en&ct=clnk&gl=us

For if we start **xdm** with full debugging verbosity:

<cli>
# xdm -debug 255 -nodaemon
...
</cli>

We can clearly see it is kicking us out because the user's default shell (bash) is NOT listed in /etc/shells. Adding it fixed the problem and everything lit up as it should.

=====xdm config=====
Now that I've gotten the xdm login situation resolved, it is time to apply configuration tweaks.

======December 1st, 2015======
=====The future: vertical OpenBSD desktops=====
I thought to tinker with rotating the display orientations to the left, so monitors could be turned on their sides (freeing up a significant amount of desk space).

The basic trick is with **xrandr**, which I accomplished in **/etc/X11/xinit/xinitrc**:

<code bash>
xrandr --output VGA-0 --off --output DisplayPort-0 --mode 1280x1024 --pos 1280x0 --rotate left --output DVI-0 --mode 1280x1024 --pos 0x0 --rotate left
</code>

The lingering problem is that XDM logins do not appear to be workingeee

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