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Enable remote access Ubuntu 10.04 using command line

Juan Jose Pablos — Thu, 10 Nov 2011 20:21:36 +0000

To get a desktop enable for remote access you could use the command line to ensure that regarding which of you user have access on the PC you are able to help out in trivial task.

To do so you could run this line as root:

gconftool-2 –direct \
–config-source xml:readwrite:/etc/gconf/gconf.xml.mandatory \
–type bool \
–set /desktop/gnome/remote_access/enabled true

Sometimes the machines is unattended, so if no user is around to give you access then you will not be able to get that session. To disable the prompt message just type:

gconftool-2 –direct \
–config-source xml:readwrite:/etc/gconf/gconf.xml.mandatory \
–type bool \
–set /desktop/gnome/remote_access/prompt_enabled false

This is up to the admin, this could just hide that you access that session, just be careful. This settings has privacy issues.

gconftool-2 –direct \
–config-source xml:readwrite:/etc/gconf/gconf.xml.mandatory \
–type string \
–set /desktop/gnome/remote_access/icon_visibility never

HOWTO Account Tracking Konica Minolta C220 under linux

Juan Jose Pablos — Fri, 10 Jun 2011 17:39:07 +0000

I assume that you have your Konica Minolta Bizhub working fine under linux, but as soon as you enable account track, it stop working under linux (I am on Ubuntu 10.04). Looks like there is a problem on some PJL commands that the linux driver does not forward to the printer, so a solution to this problem is to create a filter that add those. You maybe have a config with at least those elements:

DeviceURI ipp://192.168.252.222/ipp
Filter application/vnd.cups-raw 0 -
Filter application/vnd.cups-command 0 commandtops
Filter application/vnd.cups-postscript 0 -

Change that to

DeviceURI ipp://192.168.252.222/ipp
Filter application/vnd.cups-raw 0 minolta
Filter application/vnd.cups-command 0 commandtops
Filter application/vnd.cups-postscript 0 minolta

Then create /usr/lib/cups/filter/minolta so it inject some PJL commands. And give it a execute permission chmod +x minolta :

#!/bin/bash

source /etc/cups/ppd/${PRINTER}.km

echo -en “\033%-12345X”
echo -en “@PJL JOB\015\012″
echo -en “@PJL SET KMSECTIONNAME = \”${ACCOUNT_NAME}\”\015\012″
echo -en “@PJL SET KMSECTIONKEY2 = \”${ACCOUNT_PASSWORD}\”\015\012″
echo -en “@PJL SET KMCOETYPE = ${ACCOUNT_COETYPE}\015\012″
echo -en “@PJL ENTER LANGUAGE = POSTSCRIPT\015\012″

cat -

echo -en “\004\033%-12345X\015\012@PJL EOJ\015\012″
echo -en “\033%-12345X”

Then create a file /etc/cups/ppd/KONICA-MINOLTA-C360Series.km and change name and password to match your setup

ACCOUNT_NAME=”user”
ACCOUNT_PASSWORD=”1234″
ACCOUNT_COETYPE=”0″

I do not take the credit of all this, just found it here:
problem installing driver for Konica Minolta Bizhub 222

La guerra de los moviles

Juan Jose Pablos — Mon, 27 Dec 2010 10:51:22 +0000

This is how smartphone users see each other:

iPhone vs. Android vs. BlackBerry

Reduce the size of a dynamic VDI file in VirtualBox

Juan Jose Pablos — Fri, 19 Nov 2010 08:59:42 +0000

I have got a Virtualbox with debian to build up windows machines using unattended. This virtual HD went up to 54Gb but internaly on 28Gb were used. So when I wanted to move out of that machine it took ages. I wonder if there is a easy way to clean up.
Found it.

start with liveCD,
install zerofree ( apt-get install zerofree)
zerofree /dev/sda1

When finish shutdown the virtual machine and execute on the host system:

VBoxManage modifyhd vdi_file.vdi compact

HOWTO: Reduce the size of a dynamic VDI file in VirtualBox

how to remote syslog using openwrt

Juan Jose Pablos — Wed, 17 Nov 2010 22:56:47 +0000

If you need to keep an eye and history about what is going on on your router enable remote login with this command:

echo “option ‘log_ip’ ’192.168.1.2′”>> /etc/config/system

Change 192.168.1.2 to your server. Then on your server (linux debian as example) check /etc/default/rsyslog and add “-r” to the default options. you would start getting messages on your system.
Maybe you need to comment it out on this file /etc/rsyslog.conf those options:
# $ModLoad imudp
# $UDPServerRun 514