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Dr. Sean Elvidge

Associate Professor in Space Environment at the University of Birmingham, creating the next generation space weather forecast models. Included on Forbes 30 Under 30 list.

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Category: Linux

Installing TIE-GCM on Ubuntu using gfortran

Posted on June 23, 2018 by Sean

This is a very specific post, most people will want to skip over it entirely. It is about how to install the ionosphere/thermosphere model TIE-GCM on Ubuntu computers using gfortran.

Linux, Sciencegfortran, tiegcm, Ubuntu6 Comments on Installing TIE-GCM on Ubuntu using gfortran

Unblock IP address from connecting via SSH

Posted on March 8, 2018 by Sean

I manage a small cluster at work and occasionally students get their IP address banned by entering the wrong password when logging into the cluster. I don’t fix the problem often enough to remember how to do it, so I thought I’d jot it down here for future reference.

Linuxcentos, Linux, ssh, UbuntuLeave a Comment

Passwordless SSH on CentOS

Posted on June 22, 2017 by Sean

The CentOS wiki page misses out a crucial step in setting up passwordless SSH.

LinuxLeave a Comment

Rescan Wireless Networks on Ubuntu

Posted on March 6, 2017 by Sean

Sometimes I can’t find wireless networks which I know exist (on Ubuntu 16.04). Forcing the wireless interface to rescan fixes the problem. 

LinuxLeave a Comment

Delete large number of jobs with SGE

Posted on February 24, 2017 by Sean

Sometimes I accidentally add lots of jobs to our SGE queue and want a quick way to delete them.

Linuxqdel, sgeLeave a Comment

Install G77 on Ubuntu >=14.04

Posted on January 31, 2017 by Sean

In 2012 I wrote how to install G77 on Ubuntu >=9.04. However that approach no longer works (yet that particular blog posts gets lots of hits because of a link from stackoverflow). So here are some updated instructions which work for Ubuntu >= 14.04.

Linuxfortran, g77, Ubuntu13 Comments on Install G77 on Ubuntu >=14.04

How to Install the Edimax AC600 Wireless Driver for the Raspberry Pi

Posted on January 30, 2017 by Sean

I use an Edimax AC600 series USB wireless device for my raspberry pi on Raspbian. Here is the easy way to install the driver for it. 

LinuxDriver, Edimax, Raspberry Pi, Wireless16 Comments on How to Install the Edimax AC600 Wireless Driver for the Raspberry Pi

Safe Reboot of Locked Linux Machine

Posted on March 20, 2015 by Sean

Sometimes your Linux machine will lock up, it just happens. But before you reach for the reset button try and use the magic SysRq key combination to try and perform a safe reboot.

LinuxLeave a Comment

Quick way to remove X Server for running a headless server

Posted on May 10, 2014 by Sean

I use my Raspberry Pi as a headless server so do not need anything that relies on X11, this is a quick way to get rid of everything that depends on X11 to save some space.

LinuxRaspberry Pi2 Comments on Quick way to remove X Server for running a headless server

Making files and folders lowercase

Posted on October 21, 2013 by Sean

Very occasionally I want to make all the files and folders of a particular directory lowercase (usually when porting an existing directory structure from Windows to Linux) this is how I do it. 

LinuxLeave a Comment

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