Counting calories with a few commands
2014-02-12 03:14:00 +0000 - Written by Carl Burks
Lets say you like to use the Linux shell for totaling up your calories. Maybe you’ve got a file something like this:
You could manually calculate these or... you could use some nifty Linux programs. First lets get those numbers away from the rest of the file.
cat 20140211.calories | cut -f 1
Now you've got the numbers but they are not in a usable math expression so you can use "paste"
cat 20140211.calories | cut -f 1 | paste -s -d+
now you just need to total it all up with "bc"
ExplainShell.com can give a complete break down:
cut -f 1 | paste -s -d+ | bc