Linux

Systems

Debian on USB

A tutorial on how to install an bootable encrypted debian system on a USB key.

Utilities

Trickle

Userspace bandwidth shaper, both standalone and co-operative.

tcc

Tiny C Compiler homepage.

Tesseract OCR

Tesseract is picky about it’s TIFF input file, and I’ve found that it’s best to use pnmtotiff to generate them.

Tips

Local joe Config

~/.joerc

:include /etc/joe/joerc
:main
markb           .k1
markk           .k2
blkcpy          .k3
blkmove         .k4
blkdel          .k5
nmark           .k6
dellin          ^D
undo            ^Z
ffirst          ^F
fnext           ^N
exsave          ^X
save            ^W

SSH Passwordless Login

Run ssh-keygen to create the private and publc keys.

bash> ssh-keygen

Now append the contents of .ssh/identity.pub to .ssh/authorized_keys on the remote host.

Large Xterm for X

xterm -aw -leftbar -ls -rw -sb -sl 1500 -bg black -fg white -fn -misc-fixed-medium-r-normal--20-200-75-75-c-100-iso8859-1

X11 VNC over SSH

This script requires x11vnc on the remote host, vncviewer on the client, and a ssh path between the two.

#!/bin/bash

HOST=$1

if [ "x$2" == "x" ] ; then
      USER=""
else
      USER="$2@"
fi

PORT=`ssh ${HOST} "x11vnc -display :0 -bg -nopw -q" | grep PORT`
PORT=`echo "${PORT}" | sed -e 's/PORT=//'`
PORT=`expr ${PORT} - 5900`

vncviewer ${HOST}:${PORT}

Self Signed Certificate

The first step is to create your RSA Private Key.

openssl genrsa -des3 -out server.key 1024

Once the private key is generated a Certificate Signing Request can be generated.

openssl req -new -key server.key -out server.csr

Remove Passphrase from Key

cp server.key server.key.org
openssl rsa -in server.key.org -out server.key

Generate a Self-Signed Certificate.

openssl x509 -req -days 36500 -in server.csr -signkey server.key -out server.crt

Install the Private Key and Certificate.

cp server.crt /usr/local/apache/conf/ssl.crt
cp server.key /usr/local/apache/conf/ssl.key

Configure SSL-Enabled Virtual Hosts.

SSLEngine on
SSLCertificateFile /usr/local/apache/conf/ssl.crt/server.crt
SSLCertificateKeyFile /usr/local/apache/conf/ssl.key/server.key
 
 
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