How to install MacOS Sierra guest on VirtualBox on Ubuntu host 1

How to install MacOS Sierra guest on VirtualBox on Ubuntu host

Well, yeah, I was desperate to debug an app on mac OS so … You can have it run on Ubuntu host with VirtualBox. It works on other versions of Ubuntu and VirtualBox. Haven’t tested mac OS Mojave. If you try it, drop a line on the comments below to share with other desperate developers/sysadmins. […]

syslog server

Setup central syslog server on raspberry pi 2 (and other debian based distros)

Central log server using rsyslog is an asset of your sysadmin life! It may get you on the surface on really critical failures when you manage xyz number of servers and some of them go down. In my case raspberry pi 2 with rasbian (debian wheezy for arm processors) does the job very well, without […]

exif data

Delete your personal info from your photos with Exif tool

When you create an image, take a screenshot, take a picture with your smartphone or your computer etc, that picture is tagged with some metadata which can be used to track your location or your identity. In which file types are these metadata applied? Image files (scanned documents too), audio files. What info are embeded in photos? […]

Linux home directory encryption 2

Linux home directory encryption

Encrypting the $HOME directory under ubuntu/debian and other dists. In my case my $USER is “ubuntu” so be careful to replace that with your own user. Be sure to have more than the double free space in your $HOME than the size of the files to complete the migration, else copy your files temporarily in […]

Cacti installation for monitoring servers and routers 3

Cacti installation for monitoring servers and routers

This is done with Ubuntu 12.04 Precise, but, it may be done with othe distros too. First install the required packages:

Go to /var/www/ download cacti, unpack it and rename it:

Create a database for cacti, a user for the database and insert the cacti tables in it:

 

Edit […]

Move Window Buttons Back to the Right in Ubuntu 10.04 / 10.10 4

Move Window Buttons Back to the Right in Ubuntu 10.04 / 10.10

One of the more controversial changes in the Ubuntu 10.04 beta is the Mac OS-inspired change to have window buttons on the left side. We’ll show you how to move the buttons back to the right.

The key that we want to edit is in apps/metacity/general. Click on the button next to the […]

HowTo update to lastest Firefox via PPA on Ubuntu Linux

2. update your packages

3. finally, an upgrade and you’re done!

Enjoy your new, stable, firefox! Best Regards, Specktator.[/crayon]

deluge

HowTo – Set up Deluge torrent server (aka seedbox) headless with Ubuntu

This entry is part 1 of 2 in the series Deluge SeedBox Series

Deluge is a bit torrent protocol client, designed in client server model and has the ability to run in multiple and various interfaces. Client, web interface and console. So lets’s say you have an ubuntu server installed somewhere or an ubuntu desktop which you want to load, with all the damn work of downloading huge […]

Linux Server Monitoring - Schedule a Command Output to be Sent via Email on Boot 11

Linux Server Monitoring – Schedule a Command Output to be Sent via Email on Boot

Scheduling a command on boot it’s easy and it can be done with different ways. One, with cronjobs and second, with the rc.local file (/etc/rc.local). Third, by putting your own script in /etc/init.d/. Fow now I’ll take the easy way to do it, the one with the rc.local. Requirements: sSMTP Mutt email client Implementation Open […]

Send email from Linux Terminal - How to install and use mutt terminal email client 12

Send email from Linux Terminal – How to install and use mutt terminal email client

Mutt is a sophisticated email client for linux terminal. It supports MIME, GPG, PGP and threading. In this tutorial I wont expand to report full use of the software because the whole point is to show you how to setup a basic but promising email notification system for your servers, so you can customize it […]