====== bash one-liners ======

To remove everything after and including the final '.' use: ''${var%.*}''\\
To remove the last 4 characters from 'string', use: ''new_string=${string::-4}''\\
\\
===== sed =====
\\
Substitute any of listed characters with one command
<code>
sed s'/[":=]/ /g'
</code>
Brackets mean "any one of".