Take the following HTML snippet:

<ul>
    <li></li>
    <li></li>
    <li></li>
    <li>Second to Last</li>
    <li></li>
</ul>

We would like to select the second to last list item (<li>). Here's how we'd go about doing that:

ul li:nth-last-child(2) { color: blue; }

Or, the inverse (everything but the second to last …

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#!/usr/bin/python
import sys


try: 
    hex_val = str(sys.argv[1])
except Exception as e:
    sys.exit('Please provide a hex code as an argument (e.g. hex2rgb 333333).')

r = int(hex_val[0:2], 16)
g = int(hex_val[2:4], 16)
b = int(hex_val[4:6], 16)

print('{}, {}, {}'.format(r, g, b))

Append your ~/.bash_aliases with:

alias hex2rgb="~/bin/hex2rgb.py"

Load the new alias:

$ …

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