'The enjoyment of one's tools is an essential ingredient of successful work.' -- Donald E. Knuth

Vim for Humans

You can find the dimensions of a png image using the file command, e.g. file foo.png.

Can install GNU versions of Unix utilities on Mac with homebrew: brew install coreutils

The ed line editor: bravado, utility, and history

Help for each argument of a shell command:

List only subdirectories of the current directory: ls -d */

Unix wildcards

Avoiding multiprocessing errors in bash shell

Shell scripts run in their own subshell, so a cd in a script only effects the subshell. To script a cd, use an alias instead.

UNIX Style, or cat -v Considered Harmful

Mastering the Vim language by @christoomey

RT @sysxplore: Windows problems? REBOOT. Linux problems, BE ROOT.

Summarizing Emacs cursor movement commands

RT @ed1conf: Who needs Excel and pivot tables when you have delimited plain-text files and awk(1)?

Emacs with Vim keybindings (evil-mode) works surprisingly well. When Vim and Emacs bindings conflict, it goes with Vim. But there's less conflict between the bindings than I would have expected. It feels like Vim in the small, Emacs in the large.

Better bash scripting in 15 minutes

Entering Russian characters in Vim with digraphs

bash lets you use &> to send stdout and stderr to a file. Version 4 or later.

GNU parallel is a shell tool for executing jobs in parallel using one or more computers.

'If you had done something twice, you are likely to do it again.' -- Brian Kernighan and Rob Pike