The most fundamental tool needed to administer a cluster is a parallel shell, which allows you to run the same command on a series of nodes. In this article, we look at pdsh.
Here is a clever little trick I picked from a Hacker New thread. Using a simple custom now() function, you can keep track of things you are currently working on.
Here is a problem: you need to give a bunch of DSC_xxx.JPG files meaningful names like Berlin_May_1981.JPG, Tokyo_Trip_1973.JPG, and so on. The mvdir Bash shell script dramatically simplifies this otherwise tedious task.
Jeroen Janssens has recently shared a neat little hack that allows you to bookmark often-used directory paths in the terminal and quickly jump to any of the bookmarked directories.
The Byobu session manager extends the shell, adding a range of useful functions, such as splitting the screen, running programs in the background, or organizing programs in tabs. In particular, administrators who rely on SSH will appreciate Byobu.
While there are several word count extensions for Google Chrome and Chromium (which is currently my browser of choice), none of them seem to be able to handle text selection in the File Thingie's text editor. So I hacked my own shell script that solves the problem.
