Category Archives: Linux
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 … Continue reading
The CentOS wiki page misses out a crucial step in setting up passwordless SSH.
Sometimes I can’t find wireless networks which I know exist (on Ubuntu 16.04). Forcing the wireless interface to rescan fixes the problem.
Sometimes I accidentally add lots of jobs to our SGE queue and want a quick way to delete them.
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 … Continue reading
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.
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.
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.
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.
It is possible that you still need to install g77 to compile a Fortran program on your latest version of Ubuntu, but it isn’t the repositories!! Don’t worry, it is easy.