Shell

  1. ./runme.sh &
  2. touch edit.me
  3. chmod o-w text.txt
  4. rm -r ~/removeme

HTML & CSS

<br>
creates a single line break.
<p>
creates a paragraph of text that are usually separated from adjacent blocks by vertical blank space and first-line indentation.
<head>
provides general information (metadata) about the document, including its title and links to its scripts and style sheets.
<a>
creates a hyperlink to other web pages, files, locations within the same page, email addresses, or any other URL.
<span>
represents an inline container for phrasing content. It can be used to group elements or text for styling purposes without creating a new line.
<body>
represents the content of an HTML document and encloses the part of the document which is visible to user.

red green
blue yellow

Non-decimal numbers

2C516 = (2 C 5)16 = (0010 1100 0101)2 = (001 011 000 101)2 = (1 3 0 5)8 = 13058.

SVG

A B C

LaTeX

arcsin.tex arcsin.pdf