How to output specific strings in a text file using powershell

Question

I have a.txt and b.txt. A.txt contains {2b,3c,5e,8h}, B.txt contains {1a,2b,3c,4d,5e,6f}

I would like to compare those two files, and out put only what a.txt have,i.e. "8h".

I have tried Compare-Object command. But it gives out the differences. Please help

Taylor Gibb · Accepted Answer · 2014-07-09 09:24:25Z

1

Given that the data is formatted exactly as above, you can use:

$a = '{2b,3c,5e,8h}'
$b = '{1a,2b,3c,4d,5e,6f}'

Compare-Object -ReferenceObject  $a.Trim('}', '{').Split(',') -DifferenceObject $b.Trim('}', '{').Split(',') | Where-Object {$_.SideIndicator -eq '<='}

Of course you will need to use Get-Content to read the contents of your file into $a and $b

answered Jul 9, 2014 at 9:24

Taylor Gibb

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1 Comment

Taylor Gibb Over a year ago

@Han please mark it as the answer if it helped you, so others can benefit as well.

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