Put the following little snippet in your .bashrc/.bash_profile and you'll have a handy little calculator:


? () { echo "$*" | bc -l; }


Use like this:

bash$ ? 2*2
4

Thanks textsnippets.com

from:

How to list duplicate lines in a text file, with counts next to each unique line - [spugbrap's random notes geek blog] [del.icio.us (bash)]

At some point, last year (it's been in my 'toblog' file all this time), I needed to analyze the lines in a text file, removing duplicate lines, while counting how many times each duplicated line occurred within the file, and sorting from most common to least common.

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