wget with basic authentication.

Here's how you download a file from internet which is secured by basic authentication. Replace myusername, mypassword with your own username and password.

wget http://download_file --http-user=myusername --http-passwd=mypassword

Hudson init script for Ubuntu 9.04

Hudson init script for ubuntu 9.04. This is available on hudson's website too.

http://wiki.hudson-ci.org/display/HUDSON/Installation+and+Execution

This is what worked for me. The one hudson website is for linux. This you can use as is without modifications (except for "RUN_AS") on ubuntu

#!/bin/sh

DESC="Hudson CI Server "
NAME=hudson
PIDFILE=/var/run/$NAME.pid
RUN_AS=sysadm

d_start() {
 start-stop-daemon --start --quiet --background -m --pidfile $PIDFILE --chuid $RUN_AS --exec /usr/bin/java -- -Dhudson.scm.CVSSCM.skipChangeLog=true -jar /opt/hudson/hudson.war
}

d_stop() {
 start-stop-daemon --stop --quiet --pidfile $PIDFILE
 if [ -e $PIDFILE ]
  then rm $PIDFILE
 fi
}

case $1 in
 start)
 echo -n "Starting $DESC: $NAME "
 d_start
 echo "."
 ;;
 stop)
 echo -n "Stopping $DESC: $NAME "
 d_stop
 echo "."
 ;;
 restart)
 echo -n "Restarting $DESC: $NAME "
 d_stop
 sleep 1
 d_start
 echo "."
 ;;
 *)
 echo "usage: $NAME {start|stop|restart}"
 exit 1
 ;;
esac

exit 0

SSH without Password

I got information from this site

http://www.csua.berkeley.edu/~ranga/notes/ssh_nopass.html

SSH Without a Password

The following steps can be used to ssh from one system to another without specifying a password.
Notes:

* The system from which the ssh session is started via the ssh command is the client.
* The system that the ssh session connects to is the server.
* These steps seem to work on systems running OpenSSH.
* The steps assume that a DSA key is being used. To use a RSA key substitute 'rsa' for 'dsa'.
* The steps assume that you are using a Bourne-like shell (sh, ksh or bash)
* Some of this information came from:
http://www.der-keiler.de/Mailing-Lists/securityfocus/Secure_Shell/2002-12/0083.html

Steps:

1.

On the client run the following commands:

$ mkdir -p $HOME/.ssh
$ chmod 0700 $HOME/.ssh
$ ssh-keygen -t dsa -f $HOME/.ssh/id_dsa -P ''

This should result in two files,

$HOME/.ssh/id_dsa (private key) and 
$HOME/.ssh/id_dsa.pub (public key).

2.

Copy $HOME/.ssh/id_dsa.pub to the server.

3.

On the server run the following commands:

$ cat id_dsa.pub >> $HOME/.ssh/authorized_keys2
$ chmod 0600 $HOME/.ssh/authorized_keys2

Depending on the version of OpenSSH the following commands may also be required:

$ cat id_dsa.pub >> $HOME/.ssh/authorized_keys
$ chmod 0600 $HOME/.ssh/authorized_keys

An alternative is to create a link from authorized_keys2 to authorized_keys:

$ cd $HOME/.ssh && ln -s authorized_keys2 authorized_keys

4.

On the client test the results by ssh'ing to the server:

$ ssh -i $HOME/.ssh/id_dsa server

5.

(Optional) Add the following $HOME/.ssh/config on the client:

Host server
IdentityFile ~/.ssh/id_dsa

This allows ssh access to the server without having to specify the path to the id_dsa file as an argument to ssh each time.

HUDSON: THINGS TO REMEMBER [Skip Change Log]

While starting hudson use:

java -Dhudson.scm.CVSSCM.skipChangeLog=true -jar hudson.war

This makes sure that hudson skips computing change log. Computing change log option is
slow for one thing and caused a lot of problems while I was setting it up in our projects.

Carnatic Music Website.

http://www.ecse.rpi.edu/Homepages/shivkuma/personal/music/index.html

Professor Shiv Kumar Kalyanaraman's carnatic music archive. Wonderful website for carnatic music.