[SOLVED] Extract version from string cross platform

Issue

I need to create a line in makefile which will extract the version from string, and will work cross-platform, ideally without dependencies.

This is what I had

echo "golangci-lint has version 1.42.0 built..." | grep -oP '\d+\.\d+\.\d'

retuslt: 1.42.0

But it doesn't work on mac.

Trying to do it with sed like this, but doesn't work

echo "golangci-lint has version 1.42.0 built ..." | sed -n  's/.*\(\d+\.\d+\.\d\).*/\1/p'

Solution

grep -ow '[0-9][0-9.]\+[0-9]'

That uses only a basic regular expression, and options that BSD grep and GNU grep share.

Answered By - glenn jackman