Aug 02 2015

Stop the postix server from the command line

Category: administrative tools,ubuntu upgradesadmin @ 5:46 pm

After an ubuntu upgrade, I detected lots of activity going on postfix.

I did not want to disrupt other ongoing web activity so I decided to temporarily shut down the postfix server with the following command:

sudo postfix stop

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Aug 06 2014

From Xubuntu Precise to Raring (kernel upgrade only)

I wanted to prevent some problems I found while installing the Linux TV software. I was advised to set up a newer kernel

Warning: these instructions are not meant for a production system. You can always go back to your distro’s original kernel but there is no guarantee.


Before upgrading, just make sure that your distro is up to date:

Update your repository information

sudo apt-get update

update to the the Raring Ringtail distro kernel and headers (3.8)

sudo apt-get install linux-image-generic-lts-raring
sudo apt-get install linux-headers-generic-lts-raring

and then reboot.

Grub will keep an option for you to log on to your original distro’s kernel

After rebooting, confirm that your kernel is 3.8 by running:

uname -a
Linux <your hostname> 3.8.0-44-generic #66~precise1-Ubuntu SMP Tue Jul 15 04:04:23 UTC 2014 i686 i686 i386 GNU/Linux


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Aug 04 2014

An on-screen keyboard application for Xubuntu Precise (XFCE)

Category: administrative tools,graphical desktopdublinads @ 11:31 pm

I wanted a quick onscreen keyboard for an Xubuntu system that had a faulty keyboard (I only had a mouse).

Here are the steps to set up under Xubuntu Precise.

  • From the command line,  add the ‘florence’ package ppa
 sudo add-apt-repository ppa:jools/joggler
  • update package repository information
sudo apt-get update
  •  Install the Florence virtual keyboard
sudo apt-get install florence

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