Search-string inside a object/variable - Powershell

Question

I have an object called $latestBlob_content, this contains logs from azure build pipeline. I want to find a specific string from this object. But when I call - $latestBlob_content | Select-String -Pattern $pattern . This returns the whole logs. Is the 3rd line right way of reading a blob file!?

$blobs = Get-AzStorageBlob -Container $container_name -Context $context | sort @{Expression = "LastModified";Descending=$true}
$latestBlob = $blobs[0]
$latestBlob_content = $latestBlob.ICloudBlob.DownloadText()
$pattern = "Terraform_modules.azure_data_lake.*"
$latestBlob_content | Select-String -Pattern $pattern

Thanks in advance

Code those are not working - $latestBlob_content.ToString() | Select-String -Pattern "Terraform_modules.azure_data_lake.*"

Select-String -InputObject $latestBlob_content -Pattern $pattern also returns whole logs. no the specified pattern string — Al Jubaiar
– Al Jubaiar, Commented Oct 13, 2022 at 11:04
Try this command Select-String -Path .\*.txt -Pattern 'Terraform_modules.azure_data_lake.*' — RKM
– RKM, Commented Oct 13, 2022 at 11:08
@RajkumarM , the blob is not in my drive. I am accessing it directly. I don't want to download the logs to my local drive — Al Jubaiar
– Al Jubaiar, Commented Oct 13, 2022 at 11:09
Most likely, your $latestBlob_content is one string instead of an array of strings. You could check the type using $latestBlob_content.GetType(). If that is the case, you essentially pas 1 string to Select-String and ask it if the string contains your pattern and it does so it returns you back the complete string. You could try $latestBlob_content -split "`r?`n" | Select-String -Pattern $pattern — Lieven Keersmaekers
– Lieven Keersmaekers, Commented Oct 13, 2022 at 11:17

Lieven Keersmaekers · Accepted Answer · 2022-10-13 19:09:02Z

3

Most likely, your $latestBlob_content is one string instead of an array of strings.You could check the type using $latestBlob_content.GetType().

If that is the case, you are essentially passing one string to Select-String and ask it if the string contains your pattern. It does so it returns you back the complete string.

You could try following to split up your one string into an array of strings and select only those who match your pattern

$latestBlob_content -split "`r?`n" | Select-String -Pattern $pattern

edited Oct 13, 2022 at 19:09

Lieven Keersmaekers

58.9k15 gold badges117 silver badges151 bronze badges

answered Oct 13, 2022 at 11:49

Al Jubaiar

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