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perl: /[^u4E00-u9FA5]/
js: match(/[\u4E00-\u9FA5]/)

Example:
use `<([^u4E00-u9FA5]*<[^u4E00-u9FA5]+>[^u4E00-u9FA5]*)*>` to match `<封爵	河津亭侯→安國鄉侯→向鄉侯→舞陽侯→晉王<追尊>→晉帝<追尊>>`

githubhy

Go to github
  Create new repository [don't need to initialize with the readme (can add later)]
    Go to R Studio
      File -> New Project -> Version Control -> Git
        Ctrl+V  repository URL from GitHub
          File -> New -> Markdown, enter Title, etc.
              In the Markdown window, change "output=html_document" to "output=github_document"
                Knit the document for the first time, will prompt you to save
                  Save as Title.rmd 
In the "git" tab of the R studio Environment window, you will notice that the knit produced:

githubhy

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of advantages of using submodules:

• You can separate the code into different repositories.

githubhy

brew list --formula | xargs -n1 -P8 -I {} \
    sh -c "brew info {} | egrep '[0-9]* files, ' | sed 's/^.*[0-9]* files, \(.*\)).*$/{} \1/'" | \
    sort -h -r -k2 - | column -t

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URL=https://feeds.buzzsprout.com/136050.rss # A URL example
curl -s $URL | xmlstarlet sel -N atom="http://www.w3.org/2005/Atom" -t -m './/enclosure' -v '@url' -n | xargs -n 1 -P 10 wget -nc

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# [Example] mv 818210-021-english-vocabulary-devious-devout.mp3?blob_id=1265211 021-english-vocabulary-devious-devout.mp3
# [Perl switches] https://perl101.org/command-line-switches.html
# Use "chomp" to remove '\n' from "$_". See https://perldoc.perl.org/functions/chomp
ls | perl -pe 'chomp;s/^\d+-(\d{3}-.*\.mp3)\?.*$/mv $_ $1 \n/' | sh

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'use strict'

function Scope() {
	this.va = '123';
};

Scope.prototype.va = 'abc';

var s = new Scope();

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# toggle iTerm Dock icon
# add this to your .bash_profile or .zshrc
function toggleiTerm() {
	pb='/usr/libexec/PlistBuddy'
	iTerm='/Applications/iTerm.app/Contents/Info.plist'
	
	echo "Do you wish to hide iTerm in Dock?"
	select ync in "Hide" "Show" "Cancel"; do
	    case $ync in
	        'Hide' )

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script(src="//ajax.aspnetcdn.com/ajax/jQuery/jquery-2.2.1.min.js")

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var newText = $( "p" ).text().split( " " ).join( "</span> <span>" );
newText = "<span>" + newText + "</span>";

$( "p" )
    .html( newText )
    .find( "span" )
    .hover(function() {
      $( this ).addClass( "hilite" );
    }, function() {
      $( this ).removeClass( "hilite" );