PowerShell originated as a proprietary offering that was only available on Windows. Today, PowerShell is available by default on most recent Windows systems; simply type "powershell" into the Windows search bar to locate the PowerShell app. In 2016, Microsoft open sourced PowerShell and made it available on Linux and macOS.

PowerShell Integrated Scripting Environment (ISE), introduced by Microsoft in PowerShell version 2.0, is a PowerShell host application used to write, test and debug scripts or write commands in a Windows GUI. To access the ISE, click Start, select Windows PowerShell and choose Windows PowerShell ISE. As an alternative, simply type powershell_ise.exe in the command shell or Windows Run box.


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Any computer running Windows 10 or later already has PowerShell installed by default. PowerShell can be invoked simply by typing "powershell" into the Search bar and selecting the PowerShell app from the resulting search list. Similarly, PowerShell can be invoked by entering powershell.exe in the Run dialog.

I don't use powershell. Let's get that out of the way, but today I've spotted Windows Powershell running, then disappearing, then coming back again a bit later in task-manager. I'm scared that some hacker is running scripts that I don't want.

My question is how have others been parsing this Powershell file among other esoteric Windows Event logs? Currently I am using the Splunk app TA_windows. It parses some of the generic logs quite well. Will effort be done by Splunk or the community to parse other such logs? Am I going about this completely wrong?

Here is my immediate regex issue. I want to extract the field HostApplication. As you can see the line may be one or two lines in the raw event.

I also need to know this.

I'm struggling to extract the 'CommandLine' field as everything below the 'RunspaceId' is missing when I try to extract new fields.

I'm looking at event ID's 500 & 501 and using the app Splunk_TA_windows.

When Windows PowerShell 3.0 was released as part of Windows 8, Server 2008 R2, and WMF 3.0, Windows PowerShell moved to a newer version of the .NET Framework (CLR4) that was not compatible older applications. In order to maintain backwards compatibility with these older applications, we kept Windows PowerShell 2.0 as an optional, side-by-side component in later versions of Windows and Windows Server. You could take advantage of this optional component by using powershell -version 2 to start the older version of the engine, or by continuing to use a PowerShell assembly in a .NET CLR2 application. Note: specifying any version higher than 2 with -version (e.g. 3, 4, or 5) will load the latest, non-2.0 version of Windows PowerShell on the machine, regardless of the number specified.

If not, you should instead check for the existence of the file %systemroot%\system32\WindowsPowerShell\v1.0\powershell.exe. If your installer absolutely requires a registry-based validations, you should first check for HKLM:\Software\Microsoft\PowerShell\3\PowerShellEngine (note the 3) before falling back to HKLM:\Software\Microsoft\PowerShell\1\PowerShellEngine.

ISE also features syntax highlighting, multiline editing, tab completion, selective execution, and a whole host of other features. It will even let you open multiple script windows at the same time, which is useful once you have scripts that call other scripts.

To create the best command-line experience, PowerShell is now the command shell for File Explorer. It replaces Command Prompt (cmd.exe) in the Windows Logo Key  + X menu, in File Explorer's File menu, and in the context menu that appears when you shift-right-click the whitespace in File Explorer. You can still enter cmd (or powershell) in File Explorer's address bar to launch the command shell.

Modify the settings.json file to include terminal.integrated.shell.windows. The update must be well formed json. If you have other settings in your settings.json file, you may need to adjust the following example.

My monitoring server is a linux machine (checkmk installed). I cleared the logs on the monitored windows server 2019 (checkmk agent installed) and I still see the the logs in the GUI on the linux machine. I rebooted both machines and still have the problem =(

Hi.

Very new to restic and a total noob with PowerShell as well. I have been trying for the last 2 days to get a working Restic script that is simple enough for me to understand. For this I started using GitHub - kmwoley/restic-windows-backup: Powershell scripts to run Restic backups on Windows which is awesome but too complex for me to know everything that is doing. So I simplifed it and now Restic is launched like this:

My advice, don't use powershell to find differences in files. As someone else noted, fc works, and works a little better than compare-object, and even better is downloading and using real tools like the unix emulator that Mikeage mentioned.

compare-object is designed to determine if 2 objects are member-wise identical. if the objects are collections then they are treated as SETS (see help compare-object), i.e. UNORDERED collections without duplicates. 2 sets are equal if they have the same member items irrespective of order or duplications. This severely limits its usefulness for comparing text files for differences. Firstly, the default behaviour collects the differences until the entire object (file = array of strings) has been checked thus losing the information regarding the position of the differences and obscuring which differences are paired (and there is no concept of line number for a SET of strings). Using -synchwindow 0 will cause the differences to be emitted as they occur but stops it from trying to re-synchronise so if one file has an extra line then subsequent line comparisons can fail even though the files are otherwise identical (until there is a compensatory extra line in the other file thereby realigning the matching lines). However, powershell is extremely versatile and a useful file compare can be done by utilising this functionality, albeit at the cost of substantial complexity and with some restrictions upon the content of the files. If you need to compare text files with long (> 127 character) lines and where the lines mostly match 1:1 (some changes in lines between files but no duplications within a file such as a text listing of database records having a key field) then by adding information to each line indicating in which file it is, its position within that file and then ignoring the added information during comparison (but including it in the output) you can get a *nix diff like output as follows (alias abbreviations used):

As others have noted, if you were expecting a unix-y diff output, using the powershell diff alias would let you down hard. For one thing, you have to hold it's hand in actually reading files (with gc / get-content). For another, the difference indicator is on the right, far from the content -- it's a readability nightmare.

The -force argument is required because Powershell is quite precious about this particular inbuilt alias. If anyone is interested, having GnuWin32 installed, I also include the following in my powershell profile:

I've got a bit of a strange one here - we've had a powershell script running for several years which grabs errors/warnings from our servers, and then places them into a nice email and sends them over to us for review. Its worked perfectly up until last week - when it stopped working on all of our servers!

Get-EventLog is a legacy Powershell command. Rewrite your scripts to use Get-WinEvent -the-event-log-with-the-get-winevent-powershell-cmdlet/ Opens a new window instead. It will fix the problem completely.

This will launch the PowerShell program on your computer. Alternatively, you can launch it through the Run dialog. Press Windows key + R on your keyboard, type powershell, and hit Enter to launch PowerShell.

The easiest way to work with PowerShell is in the PowerShell Integrated Scripting Environment (ISE). You can find it by clicking on Start and typing powershell ise into the search bar in Windows 10. You should see it as shown below.

Der PowerShell Host ist die Benutzerschnittstelle zur PowerShell Engine. In Windows steht standardmig die Windows PowerShell (auch Konsole) (powershell.exe, bereitgestellt durch conhost.exe) und Windows PowerShell ISE (Integrated Scripting Environment, kurz ISE) (powershell_ise.exe) zur Verfgung. Die ISE ist ein modernes Eingabefenster mit unter anderem integriertem Skripteditor, Debugger und IntelliSense. Beide Hosts erlauben es auch, herkmmliche Kommandozeilenanwendungen auszufhren, wie beispielsweise ipconfig.exe. Jedoch erlaubt die ISE keine Interaktion, wie zum Beispiel bei nslookup.exe. Die ISE kann durch Add-ons erweitert werden; eine bekannte Erweiterung ist ISESteroids.Auch Verwaltungskonsolen, wie etwa die Exchange Management Console (EMC) seit Exchange Server 2007, sind ein Host. Darber hinaus gibt es auf dem Markt weitere Hosts, wie PowerShell Plus von Idera.Zwar nutzen alle Hosts dieselbe Engine, doch da die Implementierung unterschiedlich sein kann, ist es auch mglich, dass sich die Hosts untereinander unterschiedlich verhalten.

Der Kommandozeilenname von PowerShell 6 wurde von powershell.exe in pwsh.exe umbenannt, dies erlaubt eine leichtere Unterscheidung beim Aufruf der Powershell, wenn sowohl PowerShell Core, als auch die klassische Powershell installiert sind.[40] 2351a5e196

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