Monday, 26 June 2017

Google Updating Android With Onscreen Security Notifications.

An In Depth Look At Googles Pixel Android Smartphone.

How To Install Googles Pixel And Pixel XL On Your Android Marshmallow Smartphone.

A Comparison Test Between Google Pixel And iPhone 7.

How To Check If Your Android Operating System Is Infected With Malware.

Switching From Windows To Zorin OS 8 Linux Distribution.

A Critical Bug Leaves Linux And Hundreds Of Apps Open To Eavesdropping.



A Look At The Factors Driving Mainstream Desktop Linux.

Indian Banks Switch To Linux After Support For Windows XP Ends.

Top 10 Linux Disributions for Privacy And Security.

A Look At ReactOS Linux Which Runs Native Windows Applications And Gets BSOD Errors.

Gnome Boxes 3.16.1 Released To Faciltate Installation Of Windows XP.

VMWare Photon Operating System Is Container Friendly.

Set Up Your Own VPN With PPTP On Centos Ubuntu Debian Linux.

Install Git And Set Up Git Account In RHEL Centos And Fedora.

Installing Supplemental Wallpapers In Fedora Linux.

Installing Centos 7.3 Linux Distribution.

Using Centos Web Panel AIO Free Web Hosting Panel For Centos 6 Linux.

Using Vagrant vSphere And Centos 7.

Using DCIM Open Source Data Management Tool.

Control Network Traffic Using Squid Cache And Cisco Router.

How To Find The Best Linux Distribution For Your Hosting.

Installing Docker With Ubuntu Centos 7 And Mint 17.

Installing A Datascience Server In Centos 7 Linux.

Installing VirtualMin On Centos Linux.

How To Install A Mumble Server In Centos 7 Linux.

Fedora To Centos Consistency And Transparency In Open Source Linux.

How To Install Wordpress Using Apache Or Nginx In Centos And Fedora.

How To Create A New Domain Account With Centos Webpanel.

Using vSphere And Photon OS With Integrated Containers.

How To Run Android Apps On A Linux Operating System.

Installing An FTP Server On Centos 7.

Configuring A Static IP Address In Linux And Unix.

Webmin 1.801 Released For Centos And RHEL.

AMD Produce An Open Source HSA Kernel Driver For Linux.

Mozilla Launches Focus IOS Content Blocker Based On An Open Source Blocklist.

Push 2 Hardware Now Works On Bitwig In Linux.

Four Ways To Generate Vector Graphics Automatically With Inkscape In Linux.

Crossover Linux Makes It Easier To Install Windows Programs.

Ubuntu Smashes Mac OS X In Benchmark Testing On Macbook Air.

Using Network Block Device For Faster Network Sharing In Linux.

Using BTRFS Error Recovery Features In Linux Systems.

Using BTRFS and Opensuse on a Laptop.

A Look at Kali Linux Advanced Penetration Testing Distribution.

Using UnrealIRCD IRC Server.

MediaTomb UPnP MediaServer For Linux.

A Look At Openfire Server For Linux.

A Free USB Redirector For Linux And Windows.

Using USB Over Network With Xenserver 6.

Horde Groupware Collaboration Suite.

Zabbix Enterprise Monitoring Solution.

Spacewalk Free Open Source Systems Management.

Sunday, 25 June 2017

Fedora 25 Makes It Easier To Switch From MacOS or Windows 10 To Linux.

Fedora 25 Making It Easy For First Time Users To Try.

Security Vulnerabilities in Linux Distributions.

Installing Fedora Workstation on a PC Notebook.

Tilix Terminal Emulator for Fedora Linux

Installing Multimedia and Restricted Codecs in Opensuse Linux.

Hotplugging a CPU and Disabling CPU Cores in Linux.

A Look at Some of the Popular Features in Plasma 5.1 for Linux.

Using Kmail Email Client on KDE in Linux.

How to Switch to GNU Linux.

How to Enable Wake Up On Lan in Linux.

Fixing Your Wireless Drivers in Opensuse.

Linux Mint 18 New Release.

Picking a Linux Operating System Using Slackware and Ubuntu.

LXD on Debian Using Snapd.

Saturday, 24 June 2017

Maru OS Mixes a Custom ROM with Dockable Debian Desktop.

Simplify Your Debian System with uCareSystem.

What To Expect From Linux Universal Packages.

Protecting Samba from SambaCry Exploit.

Microsoft Launch Debian Based Operating System.

Using Linux for Your Computing Needs.

Android Tamer Live Platform for Security Professionals.

Debian + Pixel with Raspberry Pi on Mac and Pc.

Simpler Updates on Debian and Ubuntu

Linux Universal Stack News

Thursday, 22 June 2017

11 Reasons to Use Gnome in Linux.

5 Popular Linux Distros for Developers.

How To Install LAMP Stack On Debian.

KDE Ships With KDE Applications 17.04.0.

5 Amazing Linux Desktop Customisations.

Where Does The Ubuntu Desktop Go From Here ?

Choosing A Linux Desktop Environment For Home Or Work.

Dells High End AIO Offers Ubuntu And RHEL Platforms.

How To Run Ubuntu 16.04 On Windows 10.

Ubuntu 18.04 Drops Unity For Gnome Desktop.

Linux Desktop Review & Why It Can Relace Windows.

Turtlebot 3 New Release.

Rename Files Using the Command Line in Linux.

Manjaro Linux 17.0 Released.

Gnome 3.24 Release.

Linux Mint and Xfce.

Using Ubuntu Server

Build Android Apps on Debian

Opensuse Leap 42.2

Install NodeJS and NPM an Linux

Move from Windows to Linux

Microsoft Support for Bash in Windows

Learn Linux in 1 Week.

Debian Stretch

Ubuntu Desktop Update

Feren Desktop

Microsoft Ubunu Suse and Fedora

Ubuntu and Gnome Desktop

Wednesday, 21 June 2017

VNStat, Centos 7 Server and Privacy Badger 2.0

Nethserver, Debian and Malware Detection on Centos 7.

Centos 7 Kernel, Samba AD and Openstack

5 Best Distros, Raspberry Pi Handheld and SteamOS in VirtualBox

Lullysec 7.2, Video Editors and 3 Best Linux For Old Computers

Robolinux, Kweezy and Kup.

Wine 1.7.15, 4MLinux and Xiki

Secure Linux Distro, !0 Best Linux Distros and MySecureShell.

Gnome Boxes, ReactOS and Deleted Files

VPN on Centos Ubuntu Debian,VMWare OS and Running a Business on Linux

Monday, 19 June 2017

How to enable EPEL repo on Centos 7 Centos 6

The EPEL repo is one you should have when you first install Centos or RHEL..
It contains many important extra packeages which are not found in the standard installation.

It can be installed using a standard shell command as below.

yum install epel-release -y

Below are old instructions for installing the EPEL repository RPM. Use this if the above process does not work for you.

The EPEL repo is enabled by just installing an RPM. Use the command below to install the EPEL repository on your CentOS system.

CentOS 6 – 32-bit

 CentOS 6 – 64-bit


After running the above commands for your relevant CentOS version, the following file is created:

/etc/yum.repos.d/epel.repo
 
This file can be edited directly to enable or disable the EPEL repo.






 

Saturday, 17 June 2017

Cenros 6/RHEL SSH tunnel in to another user account

Some times you may need to access another users account to perform some task or another and one way to do this is to use the SSH facility. To test it out we first change to root user and add a variable to the /etc/profile file.

$ sudo su

# vi /etc/profile

And in a suitable spare space add the following line 

MINIMALLINUX=atestvariable (change to suit your id)

Then append it to the end of the export line which is already there.

export PATH (and others) MINIMALLINUX

Now create a new user 'guest' and the /etc/profile file will be automatically copied to the new user's /etc/ directory.

# useradd guest

Give it a passwd

# passwd guest

New user & SSH Centos 6
Now having set up the new user we can SSH into the home directory to test out the /etc/profile variable we added earlier.

# ssh -l guest localhost

This should get you logged in.



Centos 6/RHEL install TeXstudio

TeXstudio is an integrated writing environment for creating LaTeX documents.
The goal is to make writing LaTeX as easy and comfortable as possible.

It is easily installed on most Linux distributions by using either Nux repository or by downloading from Texstudio website.


Texstudio has a multiple of different features such as the following.

  • Multi-Cursors
  • Auto completion
  • More than 1000 mathematical symbols
  • Bookmarks
  • Link overlay
  • Assistants for images, tables, formulas, ...
  • Drag & drop support for images
  • Table-formatting
Texstudio was forked from Texmaker in 2009 and has built a large community since then.

Centos 6/RHEL automate tasks with cron

Cron is the name of program that enables unix users to execute commands or
scripts (groups of commands) automatically at a specified time/date. It is
normally used for sys admin commands, like makewhatis, which builds a
search database for the man -k command, or for running a backup script, 
but can be used for anything. A common use for it today is connecting to 
the internet and downloading your email.
 
Cron is a daemon, which means that it only needs to be started once, and will 
lay dormant until it is required. A Web server is a daemon, it stays dormant 
until it gets asked for a web page. The cron daemon, or crond, stays dormant 
until a time specified in one of the config files, or crontabs.

On most Linux distributions crond is automatically installed and entered into 
the start up scripts. To find out if it's running do the following 

In the /etc directory you will probably find some sub directories called 
'cron.hourly', 'cron.daily', 'cron.weekly' and 'cron.monthly'. If you place 
a script into one of those directories it will be run either hourly, daily, 
weekly or monthly, depending on the name of the directory. 

If you want more flexibility than this, you can edit a crontab (the name 
for cron's config files). The main config file is normally /etc/crontab.
On a default RedHat install, the crontab will look something like this:
 
cog@pingu $ ps aux | grep crond
root       311  0.0  0.7  1284  112 ?        S    Dec24   0:00 crond
cog       8606  4.0  2.6  1148  388 tty2     S    12:47   0:00 grep crond  

With lots of daemons, (e.g. httpd anUsing cron

There are a few different ways to use cron (surprise, surprise). 

In the /etc directory you will probably find some sub directories called 
'cron.hourly', 'cron.daily', 'cron.weekly' and 'cron.monthly'. If you place 
a script into one of those directories it will be run either hourly, daily, 
weekly or monthly, depending on the name of the directory. 

If you want more flexibility than this, you can edit a crontab (the name 
for cron's config files). The main config file is normally /etc/crontab.
On a default RedHat install, the crontab will look something like this:d syslogd)
they need to be restarted 
after the config files have been changed so that the program has a chance 
to reload them. Vixie Cron will automatically reload the files after they 
have been edited with the crontab command. Some cron versions reload the
files every minute, and some require restarting, but Vixie Cron just loads 
the files if they have changed.
 
 Using cron


In the /etc directory you will probably find some sub directories called 
'cron.hourly', 'cron.daily', 'cron.weekly' and 'cron.monthly'. If you place 
a script into one of those directories it will be run either hourly, daily, 
weekly or monthly, depending on the name of the directory. 

If you want more flexibility than this, you can edit a crontab (the name 
for cron's config files). The main config file is normally /etc/crontab

Thursday, 8 June 2017

Centos 6, RHEL install SoftMaker Office Application

Softmaker is a proprietary rival to Microsoft Office for Linux, Windows and Android which is available as a 30 day free trial prior to purchasing, and although I mostly try out free software, the SoftMaker suite is reasonably priced for a paid app and comes in two flavours, Standard and Professional.

The standard version has 4 main functions

Textmaker

Daily correspondance and scientific essays, newsletters, greeting cards and more. Print or save as PDF file.

Planmaker

350 calculation functions,worksheets with one million rows and professional functions such as pivot tables.

Presentations

Create impressive presentations fast. Ready-made templates which can be re-designed to do the work for you. Graphics, charts, sound, videos, animations and slide transitions.

Add ons for Thunderbird

Takes competent care of your E-mails and ensures that you keep your appointments, tasks and contacts under control. Manage large quantities of emails.

 If you want more features go for the Professional version which comes with
four language packs and costs $30 more.

You can get a 30 day free trial and its available in rpm and deb format for Centos and Debian based distributions.

Just head over to Softmaker for more details and to download the free trial pack.

The great thing about Softmaker is that it works on Android tablets and Smartphones as well as Windows and Linux.


















Wednesday, 7 June 2017

Centos 6 versus Centos 7

 I used CentOS 7 fo a while but after one day of struggling I went back to 6.7 after I noticed that a lot of the software that I used wouldn't work at all with 7.

CentOS 7 is still rather buggy, and not everything works quite right with it. I'd suggest using CentOS 6.
 CentOS 6.7 is usually more bug free because it's been stabilized, CentOS 7 has new features which cause bugs, I personally noticed issues with CPU usage with it when doing parallel processing. 

 Centos 7 has SystemD and updates which is fine but the interface is slower and more cluttered. Software RAID 1 obviously does affect the CPU usage a little but it is not huge.
Centos 6 still has a few years of support left so its still a viable option for someone needing a good stable operating system.
In my opinion the production environment is different, you don't upgrade to the latest version of something because its newer, you do it if there is a need for it.

So whether you are new to Centos or have been using it for a while, its probably still best to stick with Centos 6.7 for the time being.

Theres a decent video on installing the minimal version of Centos 6 or you can check out the written tutorial here. You can download the installation ISO for Centos 6.7 at this mirror.


Tuesday, 6 June 2017

OS for satellite surveillance.

Just a quick post on operating systems used in satellite surveillance, which are the most stable in the world.

The most reliable operating systems tend to be mission-critical OSes that a lot of people arent familiar with, like RODOS, an operating system designed for satellites and space probes, and VxWorks, the operating system NASA uses for the Mars Pathfinder and Curiosity rovers.

These operating systems are designed with three primary features: reliability, reliability, and reliability. Every line is hand-traced and hand-checked multiple times, so as you can imagine they're very expensive to develop.

They’re also incredibly robust, designed not only for reliability but also to tolerate things that bring most other OSes to their knees, such as memory corruption or other hardware failures.


The next most reliable operating systems are mainframe operating systems like z/OS (IBM’s operating system for their z Systems mainframe) and COS (a batchmode operating system for Cray supercomputers).

RODOS is usually often used in highly secretive satellite surveillance centers which can monitor and manipulate huge numbers of individuals simultaneously.

Recently, India launched over 100 satellites into orbit to be used in surveillance and monitoring of individuals and there are many more which have been in existence by other countries. Operating systems like RODOS and VxWorks are a major component in the operating and control of these.