Use PowerShell to Replace Text in Strings

re: Use PowerShell to Replace Text in Strings

Sofi — Tue, 30 Apr 2013 15:45:24 GMT

Great story man!

re: Use PowerShell to Replace Text in Strings

JV — Fri, 01 Feb 2013 20:06:09 GMT

Test if a replacement occurred:

if( ($s -replace 'b','c') -ne $s){'string replaced'}else{'not replaced'}

re: Use PowerShell to Replace Text in Strings

lucid_data — Fri, 01 Feb 2013 19:43:39 GMT

@Dan r.e. "What's all that about!?!? No relevance whatsoever. Not even funny."

Lighten up, Francis.

I found the article informative; I appreciate the authors efforts.

Whether funny or just a bit silly the dialogue was effective at explaining some subtle points.

@Scott:

r.e. telling if replace actually replaced anything without comparing old/new strings

Yeah, I wish PowerShell could do that.

Looks like Perl got that one right. I am finding this to be a very helpful overview btw:

www.johndcook.com/regex.html

re: Use PowerShell to Replace Text in Strings

Dan — Fri, 25 Jan 2013 14:54:53 GMT

"“Yoo hoo, Scripting Wife,” I said with a rather loud voice.

I waited for a seemingly long time, with my ears straining for the slightest sound.

“Hmm…where did she go?” I said to myself. “Where are you, my dear?”

Without warning, she was standing in the doorway of my home office. I do not know how she does that. At times, it seems that she floats silently through the house.

“Did you bellow?” she asked mockingly.

“I am not certain ‘bellow’ is the correct word—perhaps ‘discretely inquire’ would be better,” I suggested.

“I am not your blog that you can edit. I said bellow,” she stated matter-of-factly.

“Well then…I ‘bellowed.’ You need to learn some more regular expressions if you expect to compete in this year’s Windows PowerShell Scripting Games,” I said.

“Instruct me, oh my magnificent fount of scripting knowledge,” I imagined her saying.

“Show me, Script Monkey,” she actually said."

What's all that about!?!? No relevance whatsoever. Not even funny.

re: Use PowerShell to Replace Text in Strings

jrv — Fri, 27 Jul 2012 13:11:24 GMT

@Keith

$anchor_address=$user_address -replace $email_domain,$anchor_domain)

social.technet.microsoft.com/.../threads

re: Use PowerShell to Replace Text in Strings

Keith — Fri, 27 Jul 2012 04:54:32 GMT

This is great, just what I was looking for for a script pack I'm working on for Exchange 2010 cross-forest migrations with preflight validation goodness.

One problem though, I'm using an INI file to define global variables (reading in data from the INI into globals works fine).

I end up with two string variables, lets call them $email_domain and $anchor_domain. If the users address is in $user_address and I want to replace the user domain with the anchor domain, I then run this:

$anchor_address = $user_address.replace($email_domain,$anchor_domain)

Problem is it doesn't seem to work, it's like it isn't finding the $email_domain string value. If I replace it with a literal it works fine. Ideas? Do I need to cast it or something?

re: Use PowerShell to Replace Text in Strings

Jose Lopez — Tue, 03 Jul 2012 18:41:21 GMT

Doug,

You are missing the comma in the last statement. It should read:

$a = $a -replace "something", $b

Regards.

re: Use PowerShell to Replace Text in Strings

Doug — Tue, 03 Jul 2012 17:40:59 GMT

Is there a way to use variables in the -replace option (e.g.

$a = "I want to be doing something else."

$b = "anything"

$a = $a -replace "something" $b

This gives an error in PS. Can it be done in some way?

re: Use PowerShell to Replace Text in Strings

Scott — Tue, 15 May 2012 16:33:41 GMT

Is there any way to tell if the replace actually happened without comparing the result with the original string? It would be nice if $Matches or $0 were set, but they don't appear to be. Are there any other automatic variables set on a replace? I've even tried using a [regex] object and hoping something is set in that object, but I could not find anything.

re: Use PowerShell to Replace Text in Strings

IamMred — Thu, 24 Mar 2011 03:38:28 GMT

@Steve yes you have to save it back.