03

Dec

2014

Environment Modules

December 3, 2014 jonny foss, Gnu Free Software

Environment Modules allow for management of environment variables  when using multiple compilers, multiple libraries, or even versions of applications that you might need to run. Rather than change $PATH, $LD_LIBRARY_LOAD, or $MANPATH for each you can... » More

02

Dec

2014

Saving Streaming Video with VLC

December 2, 2014 jonny open source

I was asked by a relative if a live video stream could be saved for later viewing. I found the (m3u8) address for the live video stream by right-clicking the link on the website and used this in VLC. VLC is freedom software available from the VLC... » More

01

Dec

2014

Server Technology Sentry Switched CDU

December 1, 2014 jonny network

A few notes for future reference. I am playing with a power distribution unit from Server Technology  - Model CW-16VE-P32M Initially to configure the device I plugged both the Cabinet Distribution Unit (CDU) unit and a laptop into a switch, setting... » More

28

Nov

2014

Favicon Generator

November 28, 2014 jonny web design

Note to Self: The service at http://realfavicongenerator.net is great for generating favicon's and icons for other mobile platforms.    

27

Nov

2014

Deploying a Web Project from Gitlab

November 27, 2014 jonny php

I wanted to automatically deploy a web project when any updates are pushed to the gitlab repository. To do so I added a 'Web Hook'. The Web Hook calls a URL in response to 'push' events. I created a PHP page to be called by the Web Hook: So in... » More

24

Nov

2014

Huge Pages in CentOS 6

November 24, 2014 jonny red hat centos

To check the size and amount of Huge Pages use: grep -i Hugepage /proc/meminfo This should so something like: HugePages_Total:    0 HugePages_Free:     0 HugePages_Rsvd:        0 HugePages_Surp:       ... » More

24

Nov

2014

Filezilla is Dead – Killed by Malware

November 24, 2014 jonny foss, rants

With a heavy heart I can no longer recommend FileZilla.For years I had pointed users to Filezilla for several reasons including availability on multiple platforms and support for FTPS. I have now been informed that Windows users who download FileZilla... » More

21

Nov

2014

Building Slurm Scheduler RPM Packages

November 21, 2014 jonny red hat centos

Download the slurm tarball from http://www.schedmd.com/#repos Install dependencies: yum install munge-devel munge-libs readline-devel perl-ExtUtils-MakeMaker openssl-devel pam-devel rpm-build Build the RPM: rpmbuild -ta... » More

19

Nov

2014

You (root) are not allowed to access to (crontab) because of pam configuration

November 19, 2014 jonny red hat centos

I have obviously messed something up with my PAM configuration and received the following error message: # crontab -l Permission denied You (root) are not allowed to access to (crontab) because of pam configuration. To get around this I amended the... » More

12

Nov

2014

PHP Built-In Web Server

November 12, 2014 jonny php

LAMP Development just got a little easier with PHP version 5.4 and the in-built PHP web server. To test a PHP application we can now navigate to the directory on the filesytem: cd ~/websites/whatever.com/httpdocs Then run the PHP Web Server: php... » More