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

Help for each argument of a shell command: explainshell.com/

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

Avoiding multiprocessing errors in bash shell johndcook.com/blog/2024/02/1…

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.

Two bash shortcuts to cd into /long/path/name cp file.txt /long/path/name cd !$ cp file.txt /long/path/name/foo.txt cd !$:h The :h modifier is for "head", i.e. strip off the last part of the path.

UNIX Style, or cat -v Considered Harmful harmful.cat-v.org/cat-v/

Summarizing Emacs cursor movement commands johndcook.com/blog/emacs_mov…

Mastering the Vim language youtube.com/watch?v=wlR5gYd6… by @christoomey

Better bash scripting in 15 minutes robertmuth.blogspot.com/2012…

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

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

Opening large files in Emacs emacsredux.com/blog/2014/05/… by @bbatsov

Sort and remove duplicates in large files johndcook.com/blog/2023/08/0…

Using git, add and commit all modified files in one command: git commit -a -m 'commit message'

Rename foo.old to foo.new: mv foo.{old,new} foo.new

'Gow (Gnu On Windows) is the lightweight alternative to Cygwin,' github.com/bmatzelle/gow

Create a directory and change into it: mkdir dir && cd $_

Org-mode as a lightweight notebook johndcook.com/blog/2022/08/0…

Git Magic www-cs-students.stanford.edu… // ebook

The unmount command is umount, no 'n'. Prime candidate for an alias.