URI: 

       VARIOUS ED(1) COMMANDS
       
       WIP: Expanding page to include other CLI tools
       
       
       Text manipulation
       ----------------------------------------------------------------------
       Read file into another
       ......................................................................
       `ed somefile'
       `r someotherfile'
       
       
       Insert line empty line between range of lines
       ......................................................................
       ,----
       | 1,5s/$/\ <RET>
       | <RET>
       `----
       
       
       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 '{}' \;'
       
       
       Get characters at position
       ......................................................................
       {work in progress}
       
       Sometimes an error will say "Unexpected non-whitespace character after
       JSON at position 123 ..."
       
       To find the section of text, use:
       
       `tail -c +123 somefile'
       
       
       Number of lines in files in directory
       ......................................................................
       `find . -type f -exec wc -l {} \;'
       
       Good for assessing distribution of code in a project. For unknown
       codebases, can be a helpful plumb.
       
       
       See enclosing function
       ......................................................................
       `?^function?,/^}/pn'
       
       Can be adapted to print lines from current position up to a point of
       interest.
       
       `.,/end/pn'
       
       
       Duplicate selection
       ......................................................................
       `s/selection/&&'
       
       
       Workflow
       ......................................................................
       I always close a function or closure right after it is opened:
       
       ,----
       | a
       | function() {
       | 
       | }
       | .
       | -
       | c
       `----