CODEWITHSUNDEEP
powershell
user2050854
user2050854

Reputation: 13

Want to extract the substring from string using regex in powershell scripting

I want to know the status of my running process from the detailed description using REGEX in Windows powershell scripting. I want to extract RUNNING from this string

Name: Process_name Started 2008-04-21 11:33 Status RUNNING Checkpoint Lag 00:00:00

Upvotes: 1

Views: 7351

Answers (3)

Frode F.
Frode F.

Reputation: 54871

To extract RUNNING or STOPPED etc. you can try the following:

PS > $s = "Name: Process_name Started 2008-04-21 11:33 Status RUNNING Checkpoint Lag 00:00:00", "Name: Process2_name Started 2008-04-21 11:33 Status STOPPED Checkpoint Lag 00:00:00"

PS > $s | % { if ($_ -match "Status (.+) Checkpoint") { 
    #Return match from group 1
    $Matches[1] 
    }
}

RUNNING
STOPPED

If you're reading a log-file, you can send the content of it directly to the test like this:

PS > Get-Content mylog.txt | % { if ($_ -match "Status (.+) Checkpoint") { 
    #Return match from group 1
    $Matches[1] 
    }
}

This is extracting everything between "Status " and " Checkpoint", as long as it's at least 1 character (can be mulitple words also).

Upvotes: 1

HungryHippos
HungryHippos

Reputation: 1543

If you're looking for Windows processes, doesn't it make more sense to use Get-Process which supports properties and filtering, or the WMI equivalent, gwmi Win32_Process?

Might be way off the mark here so correct me if I'm mistaken!

Upvotes: 0

mjolinor
mjolinor

Reputation: 68243

Using -replace

$text = 'Name: Process_name Started 2008-04-21 11:33 Status RUNNING Checkpoint Lag 00:00:00'
$text -replace '.+\sStatus\s(\S+)\sCheckpoint.+','$1'
RUNNING

Upvotes: 3

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