• Jozef Jarosciak
Jozef Jarosciak Blog

Strive not to be a success, but rather to be of value.

linux

How to install php-mcrypt on RHEL/CentOS 7 64 Bit

October 26, 2014by joe0

It’s a very common issue that PHP scripts using mcrypt will not work in out of the box installation of PHP. Following are instructions for installation of php-mcrypt on CentOS 7. [Read more…]

Posted in: Software DevelopmentTagged: linux, PHP

How to mount Amazon S3 bucket on CentOS or RHEL v7.x

October 18, 2014by joe0

Following are a simple instructions on how to mount Amazon S3 Bucket on CentOS or RHEL v7.x. [Read more…]

Posted in: Operating SystemsTagged: linux

How to install LAMP stack (Apache, MySQL (MariaDB) & PHP) on CentOS / RHEL v7.x

October 18, 2014by joe0

Following are the instructions for installing LAMP stack onto CentOS 7 or RHEL 7. LAMP stack commonly refers to a Linux installation of Apache, MySQL and PHP, which allow you to run full fledged web server with support for scripts and databases on a Linux server. In our case we’ll be installing: Apache HTTP Server vs 2.4, PHP 5.4.16 programming language and MariaDB 5.5.37 Server (a community-developed fork of the MySQL relational database management system).

[Read more…]

Posted in: Software DevelopmentTagged: linux, PHP

How to install Webmin on Centos 7

October 17, 2014by joe0

Simple, yet detailed instructions on how to install Webmin on Centos 7, add firewall exceptions for Webmin port and even change the default Webmin port if that’s required. [Read more…]

Posted in: Operating SystemsTagged: linux

How to run Android 4.2.2 emulator with Google Play App Store on Windows, Linux, OS X or Solaris

October 5, 2014by joe0

There are many instructions for creating Android emulator on Windows, Linux, OS X or Solaris, but I couldn’t find any to show how to have a fully functional Android operating system along with a full functioning Google Play App Store. This basically allows you to run all Android apps from Google Play store on any other popular operating system, including those apps you have purchased from Google Play. Following instructions will walk you through setting this up. [Read more…]

Posted in: Operating SystemsTagged: linux

How to fix the “Shellshock Bash” vulnerability on CentOS & Red Hat

September 24, 2014by joe0

Simple instructions on how to fix the “Bash Software Bug” (Shellshock Bash Vulnerability) and the biggest threat since “Heartbleed”, using open-source command-line package-management utility YUM (yellowdog updater). Below instructions will work on CentOS & Red Hat. Other Linux systems such as Scientific Linux, Yellow Dog Linux, Oracle Linux and those using the RPM Package Manager currently do not have the patch available (at the time of this article – 24.Sept.2014) but that should be coming soon. In any case instructions posted below will work for these other Linux distros as soon as the patch is available.

[Read more…]

Posted in: Operating SystemsTagged: linux

DigitalOcean.com Droplet – How to resolve issues related to change of the kernel?

September 16, 2014by joe0

Following is a guide on properly changing a kernel of your DigitalOcean.com droplet. [Read more…]

Posted in: Operating SystemsTagged: linux

What are the five fastest, or most powerful, computers in the world? (December 2013)

December 12, 2013by joe0

For the purposes of this article, I’ll be referring to most powerful non-distributed computers in the world. Rank is based on a Rmax value (score measured using the LINPACK benchmark suite). Measurements are in petaflops (quadrillions of floating point operations per second). Following list is a current rank as of November/December 2013.

[Read more…]

Posted in: Operating SystemsTagged: linux

Replace string in multiple files within multiple subdirectories (linux command)

August 27, 2013by joe0

[Read more…]

Posted in: Operating SystemsTagged: linux

How to monitor Linux bandwidth usage/utilization in real-time with IPTraf over SSH (Centos 6.x)

August 26, 2013by joe0

Monitoring of bandwidth usage in Linux over SSH can be quite simple. [Read more…]

Posted in: Operating SystemsTagged: linux

How to run Citrix ICA Client on Linux Mint 14 “Nadia” 64-bit

February 16, 2013by joe0

To execute Citrix ICA Client on Linux Mint 14 “Nadia” 64-bit isn’t something you’ll get working right out of the box.
If you try to run a shortcut from your Citrix page, you’ll be most likely treated to following error:
SSL error. Contact your help desk with the following information: You have not chosen to trust”/C=US/ST=/L=/O=Equifax/OU=Equifax Secure Certificate Authority/CN=”, the issuer of the server’s security certificate ((SSL error 61). [Read more…]

Posted in: Operating SystemsTagged: linux

Ako spustit Darktable v Cestine (cz/czech) – Mint/Ubuntu Linux

January 27, 2013by joe0

– Najprv nainstaluj Cestinu do Linuxu. Chod do Language settings a vyber ‘Czech’ z jazykoveho menu a stlac Install button. [Read more…]

Posted in: Slovak Language PostsTagged: linux

How To Search Files on Linux

April 2, 2011by joe0

Couple commands to make your Linux file searching life easier: [Read more…]

Posted in: Operating SystemsTagged: linux

How to Block An IP Address in Centos (RHEL/Fedora) Linux

March 28, 2011by joe0

This is a simple guide on how to block an IP address in Centos, RHEL or Fedora Linux. [Read more…]

Posted in: Operating SystemsTagged: linux
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