?
Solved

use variable on regex

Posted on 2016-07-28
6
Medium Priority
?
48 Views
Last Modified: 2016-07-29
Hello,

I try to use variable $_.fg_name  on regex but the result is []


$file = "C:\test\mv_ddl.sql"
$_.fg_name = "Primary"



(Get-Content $file) | ForEach-Object {$_ -replace [regex]::Escape("ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]"), "ALLOW_PAGE_LOCKS  = ON) ON \[$($_.fg_name))\]" -replace [regex]::Escape(") ON [PRIMARY]"), ") ON \[$($_.fg_name))\] TEXTIMAGE_ON [LOB]"} | Set-Content $file

How can I resolve, please?

Thanks

Regards
0
Comment
Question by:bibi92
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 85

Expert Comment

by:oBdA
ID: 41733343
$_ is the loop variable inside the ForEach, which is the string from the input file currently being processed.
Just use a regular variable (and please put code inside code style tags, see the buttons over the Edit field).
$file = "C:\test\mv_ddl.sql"
$fg_name = "Primary"

(Get-Content $file) | ForEach-Object {$_ -replace [regex]::Escape("ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]"), "ALLOW_PAGE_LOCKS  = ON) ON \[$($fg_name))\]" -replace [regex]::Escape(") ON [PRIMARY]"), ") ON \[$($fg_name))\] TEXTIMAGE_ON [LOB]"} | Set-Content $file

Open in new window

0
 
LVL 13

Expert Comment

by:Dustin Saunders
ID: 41733350
You need to get that variable another way, $_ is referring to the object piped in.  For example:

1,2,3 | %{ write-host $_ } 

Open in new window


So you need to reference the object which contains the property you want to use.  What object contains fg_name and can you post code where you are getting that object?
0
 

Author Comment

by:bibi92
ID: 41733364
I test Obda solution the result for the variable is  \[)\].

Thanks
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 

Author Comment

by:bibi92
ID: 41733384
Thanks a lot
0
 
LVL 85

Accepted Solution

by:
oBdA earned 2000 total points
ID: 41733391
On closer inspection, you had a closing parenthesis too many, and since the patterns will be escaped by [regex]::Escape, you don't need to escape the square brackets.
$file = "C:\test\mv_ddl.sql"
$fg_name = "Primary"

(Get-Content $file) | ForEach-Object {$_ -replace [regex]::Escape("ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]"), "ALLOW_PAGE_LOCKS  = ON) ON [$($fg_name)]" -replace [regex]::Escape(") ON [PRIMARY]"), ") ON [$($fg_name)] TEXTIMAGE_ON [LOB]"} | Set-Content $file 

Open in new window

0
 

Author Closing Comment

by:bibi92
ID: 41734766
thanks
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This script can help you clean up your user profile database by comparing profiles to Active Directory users in a particular OU, and removing the profiles that don't match.
In previous parts of this Nano Server deployment series, we learned how to create, deploy and configure Nano Server as a Hyper-V host. In this part, we will look for a clustering option. We will create a Hyper-V cluster of 3 Nano Server host nodes w…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…

650 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question