Footnote
Click the hook will locate the footnote1, and here is another footnote2.
Mathematics
The mathematics powered by MathJax:
\[\sum_{n=1}^\infty 1/n^2 = \frac{\pi^2}{6}\]When $a \ne 0$, there are two solutions to $ax^2 + bx + c = 0$ and they are
\[x = {-b \pm \sqrt{b^2-4ac} \over 2a}\]Inline code
This is an example of Inline Code.
Code block
Common
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This is a common code snippet, without syntax highlight and line number.
Specific Languages
Console
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$ env |grep SHELL
SHELL=/usr/local/bin/bash
PYENV_SHELL=bash
Shell
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if [ $? -ne 0 ]; then
echo "The command was not successful.";
#do the needful / exit
fi;