How to calculate the average of value in lines of a text file on Linux by a script?

How to calculate the average of value in lines of a text file on Linux by a script?

The file.txt is like:

Run 0: Time used: 22.235331711 seconds.
Run 1: Time used: 20.784491219 seconds.
Run 2: Time used: 21.851638876 seconds.

What I want it to calculate the average time.

awk is handy for this purpose:

awk '{ total += $5; count++ } END { print total/count }' file.txt
Answered by Eric Z Ma.

Eric Z Ma

Eric is a father and systems guy. Eric is interested in building high-performance and scalable distributed systems and related technologies. The views or opinions expressed here are solely Eric's own and do not necessarily represent those of any third parties.

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