Discussion on: Fun with Bash

[Mathieu PATUREL]

Cool command! You could remove the head bit though with awk.

awk 'condition { command }'

By default the condition is NUL, which matches every line (so the command is run on every line). You have access to different variable (in both the condition and the command I think), one of them being NR for the line number.

So, if you set the condition to NR!=1, it'll run on every line different than 1 (which is the first one).

So, your command can be shortened from:

awk -F , '{print $1, $3-$2}' data.csv | tail -n +2 | sort -r -n --key=2 | column -t

to

awk -F , 'NR!=1{print $1, $3-$2}' data.csv | sort -r -n --key=2 | column -t

:smile:

I learned a bunch otherwise, so thanks!

[Chris James]

Thanks for the improvements!