powershell

How to replace multiple strings in a file using PowerShell

One option is to chain the -replace operations together. The ` at the end of each line escapes the newline, causing PowerShell to continue parsing the expression on the next line: $original_file=”path\filename.abc” $destination_file=”path\filename.abc.new” (Get-Content $original_file) | Foreach-Object { $_ -replace ‘something1’, ‘something1aa’ ` -replace ‘something2’, ‘something2bb’ ` -replace ‘something3’, ‘something3cc’ ` -replace ‘something4’, ‘something4dd’ ` … Read more

Why won’t Variable update?

tl;dr In order to update the $BaseHomeFolderPath variable in the script scope (or any scope other than the local one), you must reference it in that scope explicitly: $script:BaseHomeFolderPath=”\\path1\users” Otherwise, without a scope specifier such as $script:, you’ll implicitly create a new variable by that name in the current scope, which in your case is … Read more

CMD pipe different form Powershell pipe?

Note: The specific pino-pretty problem described in the question is not resolved by the information below. Lukas (the OP) has filed a bug report here. It’s surprising that you get nothing, but the fundamental difference is: cmd.exe‘s pipeline conducts raw data, i.e. byte streams (which a given program receiving the data may or may not … Read more

How to automate either PowerShell or PowerShell Core for same machine

Here’s an overview of the PowerShell SDK-related NuGet packages:Adapted from here. Note: System.Management.Automation is not recommended for direct use. To create stand-alone applications that host the PowerShell runtime in order to call PowerShell commands in-process: Use Microsoft.PowerShell.5.ReferenceAssemblies for .NET Framework (Windows-only) applications using the legacy Windows PowerShell runtime. Use Microsoft.PowerShell.SDK for (potentially cross-platform) .NET Core … Read more

How do I write to standard error in PowerShell?

Use Write-Error to write to stderr. To redirect stderr to file use: Write-Error “oops” 2> /temp/err.msg or exe_that_writes_to_stderr.exe bogus_arg 2> /temp/err.msg Note that PowerShell writes errors as error records. If you want to avoid the verbose output of the error records, you could write out the error info yourself like so: PS> Write-Error “oops” -ev … Read more

Executing a command stored in a variable from PowerShell

Here is yet another way without Invoke-Expression but with two variables (command:string and parameters:array). It works fine for me. Assume 7z.exe is in the system path. $cmd = ‘7z.exe’ $prm = ‘a’, ‘-tzip’, ‘c:\temp\with space\test1.zip’, ‘C:\TEMP\with space\changelog’ & $cmd $prm If the command is known (7z.exe) and only parameters are variable then this will do $prm = … Read more