VARIOUS ED(1) COMMANDS
       
       WIP: Expanding page to include other CLI tools
       
       
       Text manipulation
       ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       Line splitting
       ----------------------------------------------------------------------
       Split a line using a substitution and multi-line power combo! First,
       pack your substitution command's patterning matching part with the
       pattern where you want your new, split line to begin. Then, hang a
       back slash off the substitution command's replacement text part. Knock
       that enter key on your 'board to get a new line. Throw down an
       ampersand to grab that matched patt. Finally end the replacement with
       a forward slash. And if you're feeling fancy, add a quick p on your
       way to hitting Return.
       
       ,----
       | ,pn
       | 1       this line should split at the first word 'split'
       | s/split/\
       | &/p
       | split at the first word 'split'
       | ,pn
       | 1       this line should
       | 2       split at the first word 'split'
       `----
       
       A small variation is to put the ampersand before the
       backslash. That'll make the split begin right after the matched
       pattern.
       
       
       Finding out stuff about files
       ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       See number of lines in files in a directory: `find src/* -type f -exec
       wc -l '{}' \;'