Misc howto use

From CourvilleWiki

Contents 1 Misc howto use notes for describing commands that I use often 1.1 Download photos from my canon powershot S50 1.2 Immunity to spams: spamassassin 1.3 install full directory content on your palm 1.4 rebuild index for damaged avi file 1.5 convert your vhs family tapes into divx movies 1.6 Printing with gimp/cups/turboprint 1.7 smbclient and french charset 1.8 completion under zsh doesn't work after update 1.9 CVS update command 1.10 burn iso of your favorite distro 1.11 Euro symbol with latex 1.12 Create your xface 1.13 List open ports

Misc howto use notes for describing commands that I use often

Download photos from my canon powershot S50

For that purpose I use gphoto2. The Canon S50 talks PTP in a generic fashion but is now natively supported by gphoto2. In order to retreive all the files I use the following command:

gphoto2 --camera "Canon PowerShot S50 (normal mode)" --get-all-files

For using the default PTP mode you can try instead:

gphoto2 --camera "USB PTP Class Camera"

In order to retreive a special range of photos:

• identify the internal numbers associated with the desired photos through

gphoto2 --camera "Canon PowerShot S50 (normal mode)" -L

• pick the ones (e.g. 47 to 52)

gphoto2 --camera "Canon PowerShot S50 (normal mode)" -p 47-52

Immunity to spams: spamassassin

• create .procmailrc file with the following lines

PATH=/usr/local/bin:/bin:/usr/bin
SHELL=/bin/sh
LOGFILE=/dev/null
SPAMDIR=$HOME/mail/spam
# perform before all the filtering for mailing lists here

# only process if message under 250*1024 bytes
:0fw
* < 256000
| spamassassin

# reroute tagged as spam emails to your spam mbox
# if score is higher than 15 it is almost sure that it is a spam
:0:
* ^X-Spam-Level: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*
$SPAMDIR/spamassassin-sure

# others are probable spams
:0:
* ^X-Spam-Flag: (Yes|YES)
$SPAMDIR/spamassassin-pehaps

• in your .muttrc in order to tag messages as spam use the following macro:

# mark as spam and delete
macro index S "|sa-learn --spam --no-rebuild --single\n; <delete-message>\n\n"
macro index S "|sa-learn --spam --no-rebuild --single\n; <delete-message>\n\n"
# mark as ham and save to some folder
macro pager H "|sa-learn --ham --no-rebuild --single\n; <save-message>\n"
macro pager H "|sa-learn --ham --no-rebuild --single\n; <save-message>\n"
# rebuild the spamassassin bayes filter db
macro index R "!/usr/bin/sa-learn --rebuild"

• to learn from a mailbox use:

sa-learn --mbox --spam $SPAMBOX
sa-learn --mbox --ham $HAMBOX

• use the following user prefs for spamassassin in .spamassassin/user_prefs

required_hits           3.0
rewrite_subject         0
whitelist_from          "*.courville.org", "*.crm.mot.com", "*.motorola.com", "*.enst.fr"
# Bloody spammers faking my whitelist!!
blacklist_fromno        from@email.mot.com *@motgate*.mot.com *@ftpbox.mot.com
skip_rbl_checks         1
check_mx_attempts       0
ok_languages            fr en
use_bayes               1
auto_learn              1
# If Bayesian filter says its spam, I trust it. Up the scores.
score BAYES_60 0 0 2.000 2.100
score BAYES_70 0 0 4.000 4.100
score BAYES_80 0 0 5.300 5.400
score BAYES_90 0 0 7.000 7.100
score BAYES_99 0 0 10.200 10.300
# HABEAS warrants are now useless as spammers are forging them
score HABEAS_SWE 0

• save your unfiltered spams into a specific folder e.g.: mail/spam and make spamassassin learn about it through a sa-learn --spam --mbox $HOME/mail/lspam then erase the mailbox.

install full directory content on your palm

• I use either jpilot (gui) or directly pilot-link commands:

pilot-xfer -p /dev/usb/tts/1 -i *.prc *.pdb

rebuild index for damaged avi file

• for single play (no fix): mplayer -idx myvideo.avi
• fix it: mencoder -oac copy -ovc copy infile.avi -o outfile.avi
• in case of serious damage use ffmpeg which is more fault tolerant: ffmpeg -i infile.avi -acodec copy -vcodec copy -o outfile.avi
• save index: mplayer -idx myvideo.avi -saveidx myvideo.idx
• use saved index: mplayer myvideo.avi -loadidx myvideo.idx

convert your vhs family tapes into divx movies

• perform acquisition with your happauge PVR250 in mpeg format using 720x576 resolution through a cat /dev/video3 > myvideo.avi. What I did is to use both peritel outputs of my VCR one linked to the PVR250 the other one linked to a standard video card in another PC for monitoring and launching remotely the acquisition. This way you avoid the inavoidable delay introduced by the MPEG coding of the PVR250.
• get rid of the temp file

rm frameno.avi

• perform 1st path audio only avi creation

mencoder input.mpg -ovc frameno -oac mp3lame -lameopts vbr=3 -o frameno.avi

• run 2nd path: actually 1st video path, use as bitrate the mencoder recommendation values for 650/700/800Mb files after previous pass

mencoder input.mpg -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vpass=1:vbitrate=$bitrate -o output.avi

• finish by the 3rd path: actually 2nd video path, optionnaly replace as bitrate the mencoder recommendation values for 650/700/800Mb files after previous pass

mencoder input.mpg -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vpass=2:vbitrate=$bitrate -o output.avi

• for an enhanced quality I use the following script:

#!/bin/sh

filein=$1
fileout=$2
sizex=$3
sizey=$4
bitrate=$5
rm -f frameno.avi
mencoder $filein -ovc frameno -oac mp3lame -lameopts vbr=3 -o frameno.avi
echo potentially refine bitrate variable based on above inputs
mencoder $filein -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vpass=1:vbitrate=$bitrate:vqscale=3:vhq:v4mv:trell -o $fileout -vf scale=$sizex:$sizey -sws 2
echo potentially refine bitrate variable based on above inputs
mencoder $filein -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vpass=1:vbitrate=$bitrate:vqscale=3:vhq:v4mv:trell -o $fileout -vf scale=$sizex:$sizey -sws 2

• acquisition of dv with sony dvcam, by default do autosplit and include date time in filename

dvgrab --format dv2 --autosplit --timestamp aviout-

Printing with gimp/cups/turboprint

• configure printer as Postscript level 2
• select proper media size
• remove the -oraw option only should remain lp -s -dplume if plume is your target printer

smbclient and french charset

What I use for displaying correctly the filenames (avoiding the alternate command) when using a smbclient:

smbclient //windaube/docs -t iso8859-15

completion under zsh doesn't work after update

If you get after an update:

ls ^I
_normal:23: command not found: _set_command
_normal:25: command not found: _dispatch

then something changed in the completion function and all you need is to erase the temporary completion file

rm ~/.zcompdump; exec zsh

CVS update command

alias cup='cvs -qz3 up -PAd'

burn iso of your favorite distro

cdrecord -v -dao -eject dev=0,0,0 speed=52 driveropts=burnfree fs=4049k timeout=20 -overburn -isosize sarge-i386-netinst.iso

Euro symbol with latex

apt-get install tetex-eurosym
\usepackage{eurosym}
\euro{10.00}

Create your xface

• get the appropriate software

apt-get install xfaces compface

• generate a square image with gimp out of your photographic picture

echo -n "X-Face:" > my_image.face
convert -despeckle -geometry 48x48 my_image.jpg xbm:- | compface >> my_image.face

• in order to include the resulting line in your .muttrc use quote-x-face to quote some forbidden characters

./quote-x-face my_image.face > muttrc.face
cat quote-x-face
#!/usr/bin/perl -w
# perl script to quote my_hdr commands for Mutt.
# mainly useful for X-Face. headers.
# (c) 2004 Christoph Berg, GNU GPL.
# 2004-06-13 cb: initial version

@f = <>;
foreach (@f) {
        chomp;
        s/(\\;'"`\$#)/\\$1/g;
}

print "my_hdr ";
print join '\n', @f;
print "\n";

List open ports

echo "Open Ports:"; netstat -anp | grep LISTEN | grep tcp | awk  '{print $4, "\t", $7}' | less