MiscNotes - Tech - The Caboteria

%TOC%

font config note that I should follow up on:

http://lists.debian.org/debian-devel/2003/debian-devel-200304/msg01763.html
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http://www.logilab.org/narval/ looks very interesting.  It's a framework for building intelligent agents. also http://ai.eecs.umich.edu/soar/ looks more fully-developed.
 
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Backspace and delete seem to give me problems.  The config that seems to work for me (using Gnome terminal) is to select the "Swap Delete/Backspace" option and don't select the "Delete generates DEL/^H" option.

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I had a strange problem with Java - JBoss could start up but not shut down.  It hung after shutting down the mail service but before any JMX RMI messages.  Turns out that I had moved my machine and the network config was FUBAR: my hostname's entry in /etc/hosts didn't match any of the IP's that I had configured.  D'oh!

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*RFC's*

RFC2945 - Secure Remote Password protocol
 
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At some point when I get a tape drive I should check out AMANDA: http://www.amanda.org/

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*Mice*

It took a little bit of fiddling to get my Gateway computer's MS <nop>IntelliMouse 1.2A to work with both GPM and X, but in the end the config is pretty straightforward.  =/etc/gpmdata= looks like:

<pre>
device=/dev/psaux
responsiveness=
type=imps2
repeat_type=raw
append=""
</pre>

which ends up running gpm like so: =/usr/sbin/gpm -m /dev/psaux -t imps2 -Rraw= .

X's =XF86Config=  "Pointer" section looks like:

<pre>
Section "Pointer"
   Protocol        "IMPS/2"
   Device          "/dev/gpmdata"
   Buttons         3
   Emulate3Buttons
EndSection
</pre>

NOTE: I don't have the mouse wheel working (yet).

The pass-through device for GPM is =/dev/gpmdata=.

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The Tulip network driver 0.92 on my Gateway box would stop working, usually when I was sending a large block of data.  It would put this in the log:

<pre>
Jun  4 19:30:29 tobypc kernel: eth0: Transmit timed out, status fc664010, CSR12 00000000, resetting...
Jun  4 19:31:04 tobypc last message repeated 7 times
</pre>

Upgrading to Donald Becker's latest driver (version 0.92t) seems to have fixed things.

---+++ Global Search and Replace

I end up re-implementing this once every couple of years, so here's what I did last time:

<pre>
#!/bin/sh

# run sed on a file in place.
# first arg is filename, second arg is sed script

if [ -f "$1" ]; then
        cp "$1" "$1.bak"
        sed --expression="$2" "$1.bak" > "$1"
fi
</pre>

Then use =find= to run that script:

<pre>
$ find . -type f -exec grep -q INDENTIFIER {} \; -exec gsed {} "s/INDENTIFIER/IDENTIFIER/g" \;
</pre>


The =-exec grep= ensures that the script only runs on files that it needs to modify.

---+++ suEXEC

Debian GNU/Linux uses apache suEXEC by default, which means that cgi scripts in user's home directories will run as that user rather than the webserver user.  suEXEC is very picky (which it should be) about things like file and directory permissions, but it emits really crappy diagnostics.  If you get messages in the apache =error.log= about "premature end of script headers" when you run a cgi script it's worth it to look in the =suexec.log= to see if there's something more descriptive.

---+++ X Windows Fonts

I had to enable =type1= fonts in order to get Abiword to work, but then fonts in other programs started to look like shit.  It turns out that you need to make sure that the type1 fonts are loaded *last* (i.e. the =FontPath     "/usr/X11R6/lib/X11/fonts/Type1/"= line in =/etc/X11/XF86Config-4= should be _after_ all of the other =FontPath= entries).

---+++ ASP

I did some work with a MS deployment environment once.  While the project was fun the platform was a PITA, but if I did another I might want to check out the [[http://www.tamber.com][Tamber Project]] which looks like the equivalent of phplib for ASP.  On the other hand, [[http://www.tripi.com/arrowhead/][Arrowhead]] aims to make ASP code run on Java platforms.


---+++ Windows

Windows is annying, but with Cygwin it looks enough like unix that I don't get an itchy rash when I use it.  http://www.microsoft.com/ntworkstation/downloads/PowerToys/Networking/NTTweakUI.asp is a nice little tool that can fix some annoying shortcomings such as lack of tab completion in cmd.exe.

---+++ Mac

The computer for the 1%.  The most annoying thing about macs is the keyboard - if you're used to a PC keyboard the "mac key" will drive you nuts.

https://addons.mozilla.org/en-US/firefox/addon/customizable-shortcuts/ - allows you to make the keyboard shortcuts more PC-like.

---+++ Dynamic DNS

http://ipcheck.sourceforge.net/

run from =~/.ipcheck=:

<pre>
tobyc@phoenix:~/.ipcheck$ python ~/bin/ipcheck.py -l -8 {router_pw} -c tcabot {easydns_pw} www.caboteria.org
</pre>

you can force an update using =-f=.

All of this is moot, though, because fscking RCN blocks incoming ports 25 and 80 for their dynamic IP customers.  You need to pay $20/mo for a "static" IP to get those ports unblocked.

---+++ ALSA Problem

I had a problem where sound just stopped working one day.  This is odd since this sort of thing rarely happens in GNU/Linux; my experience has been that it's hard to get things configured but once you do it's solid).  I'm not sure how, but it looks as if the sound chips got into some strange configuration, and then that configuration gets saved and restored when you shut down and come back up.  The saved state is in a file in =/var/lib/alsa= so I deleted the file, rebooted, and things worked OK.

---+++ favicon.ico

I don't see the need for a site logo, but on the other hand my error logs were getting filled with requests for =favicon.ico= so I made a cheezy one.  In the gimp, crop to 16x16, save as =.ppm=, it will ask you if you want to export, then raw or ascii (choose ascii).  Then
<pre>
$ ppmtowinicon favicon.ppm > $WEBHOME/favicon.ico
</pre>

---+++ Savane

Want to add a "gnu only" help wanted query page.

Project located at: https://gna.org/projects/savane

help wanted pages are in =frontend/php/people=.  =index.php= is probably what we care about.  It calls =utils_get_content()= which (apparently) gets the data from the database.  It's defined in =frontend/php/include/utils.php=.
 

---+++ Locale

I had a problem  that caused mutt to use strange characters to indicate message threads:  

     <img src="%ATTACHURLPATH%/Screenshot.png" alt="Screenshot.png"  />

Turns out that newer Debian installs have UTF-8 enabled using the =/etc/default/locale= file whereas older installs don't.  I set up my server using the etch-vintage installer whereas my workstations were installed years ago and have been incrementally updated since then.  To fix the problem I just needed to set up a =/etc/default/locale= file for my workstations (the contents are just =LANG=en_US.UTF-8=).  It appears that Fedora core 4 (and probably newer) also set their default locale to =en_US.UTF-8=.
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I	Attachment	Action	Size	Date	Who	Comment
png	Screenshot.png	manage	87.4 K	28 Feb 2007 - 07:46	TobyCabot	screenshot of mutt with a broken locale setting