Powershell regex to replace pattern

Question

My script should look for a comma separated 3 digit version number (eg. 1.2.3)
and replace it with the new version number. The same file has another string which doesnt meet this regex still the script changes it.

Samplefile.txt

  "[email protected]"
  "e2bf8da9-275a-484d-95a6-7e6b8c0ce0ca"

Replace command portion from the Script:

  -replace "\d.\d.\d","2.2.2"

I expect it to give output like this,

  "[email protected]"
  "e2bf8da9-275a-484d-95a6-7e6b8c0ce0ca" # This string not changed

But it changes the second string too as follows which I didn't intent to

   e2bf8da2.2.2a-484d-92.2.2e2.2.2ce0ca

Am I wriitng the regex all wrong. Can someone help please?

The "dot" (aka period .) in a regex is the match-anything meta-character, so \d.\d.\d matches "a digit followed by any character followed by a digit followed by any character followed by a digit". See Kasra's answer for making the dot a plain dot. — Stephen P
– Stephen P, Commented May 29, 2015 at 22:02

Kasravnd · Accepted Answer · 2015-05-29 21:55:42Z

1

You need to escape the dots in your regex :

"\d\.\d\.\d"

Demo

answered May 29, 2015 at 21:55

Kasravnd

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