Command console output -- to file . Get { Windows Filtering Platform / Windows Firewall } rules-CodePudding

Output of this doesn't fit into the window

get-netFirewallRule | where { $_.Action -eq 'Block' -and $_.Enabled -eq 'True' }

read-host -prompt "Press Enter to continue..."

When i try

Remove-Item -Path ($env:userprofile   "\Desktop\enabledBlockRules_WindowsFilteringPlatform.txt")

get-netFirewallRule | where { $_.Action -eq 'Block' -and $_.Enabled -eq 'True' } | forEach {
    $_ | Add-Content -Path ($env:userprofile   "\Desktop\enabledBlockRules_WindowsFilteringPlatform.txt") -Encoding "utf8"
}

read-host -prompt "Exported to desktop ."

I get nonsense results . How could i do this ?

CodePudding user response：

To streamline your answer and add some context:

Get-NetFirewallRule | 
  Where-Object { $_.Action -eq 'Block' -and $_.Enabled } | 
    Out-File -Encoding utf8 -FilePath "$env:userprofile\Desktop\enabledBlockRules_WindowsFilteringPlatform.txt"

Note how Out-File is directly piped to, which obviates the need for removing the output file first and the inefficient loop with -Append.

As for why switching from Add-Content to Out-File made the difference:

Set-Content / Add-Content perform simple .ToString() stringification of its input objects, which for complex objects more often than not results in unhelpful string representations.
By contrast, Out-File (>) / Out-File -Append (>>) use the usual for-display output-formatting system, yielding the same rich formatting you'd see when outputting to the console.
- Do note, however, that these representations are for the human observer, and therefore not generally suited to programmatic processing; for the latter, use a structured text format, such as CSV or JSON.

See this answer for more information, including about the different default character encodings between the cmdlets in Windows PowerShell.

CodePudding user response：

damn

Remove-Item -Path ($env:userprofile   "\Desktop\enabledBlockRules_WindowsFilteringPlatform.txt")

get-netFirewallRule | where { $_.Action -eq 'Block' -and $_.Enabled -eq 'True' } | forEach {
    $_ | Out-File -FilePath ($env:userprofile   "\Desktop\enabledBlockRules_WindowsFilteringPlatform.txt") -Encoding "utf8" -Append
}

read-host -prompt "Exported to desktop ."