extract version number from string by using shell script

Question

I need to extract version number from the following strings .

pattern looks like this.

by using shell script

VAR1=1.1-g13ab57737123
Output 1.1

VAR1=1.2-g328891ahqq12
Output 1.2

VAR1=2.3-g123900a12328
Output 2.3


VAR2=abcd960_1.1-g13ab57737123
Output 1.1

Does this answer your question? Extract substring using regexp in plain bash — Chris Maes
– Chris Maes, Commented Nov 13, 2019 at 7:59

lenik · Accepted Answer · 2019-11-13 08:30:48Z

0

This works:

$ VAR1=1.1-g13ab57737123
$ echo $VAR1
1.1-g13ab57737123
$ echo $VAR1 | grep -o "[0-9]\.[0-9]"
1.1

Or if you need longer numbers:

$ VAR1=1.1234-g13ab57737123
$ echo $VAR1 | grep -o "[0-9]\+\.[0-9]\+"
1.1234

answered Nov 13, 2019 at 8:23

lenik

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