You can always access items from other folders on your computer, but terminal will keep track of the folder you are currently inside of. When using terminal, you do work from inside of a specific folder on your computer. If you are not sure, visit the instructions for macOS or Linux (coming soon). To know how to open a terminal window.Access to a Unix terminal on any Linux or a macOS environment.In order follow this guide, you will need: If you already have a lot of experience with the terminal, check out the commands on the homepage for quick reference material. As you follow these instructions, keep in mind that your computer’s files and folders likely will be different from the samples. This guide is intended to teach you the basics of navigating files and folders on a terminal. PS> Get-EventSubscriber | Unregister-EventĪt this point, the subscriber has been removed and we're back to where we started.How to navigate files and folders on a terminal Then, to remove them, use the Unregister-Event cmdlet. We can view all existing subscribed events by using the Get-EventSubscriber command. This will continue to monitor this folder until the PowerShell session ends. This message came from the watcher we created. Our New-Item command didn't return anything since the output was sent to $null, but we did get a message saying the file was created. PS C:\> $null = New-Item -path 'C:\FolderWhereStuffChanges\file.txt' -ItemType FileĬ:\FolderWhereStuffChanges\file.txt was Created at 15:42:35 Let's now drop a file into the C:\FolderWhereStuffChanges folder and see what happens. Id Name PSJobTypeName State HasMoreData Location Command PS> Register-ObjectEvent $watcher 'Created' -Action $action To do that, I'll use the Register-ObjectEvent cmdlet and provide it the watcher object we created, as well as the type of action to monitor. Now that I have the watcher object and the action I'd like to take when a file is created, I then need to register this event. Write-Host "$path was $changetype at $(get-date)" This is a variable that will be present every time an event fires and contains information such as the file path and the type of event that fired. As you can see below, I'm using the built-in variable. We define this action by creating a PowerShell scriptblock. There are different types of events you can "watch," such as new files or modified files, but in this article we're just going to focus on new files. For simplicity, I'll write output to the console with the name of the path of the file that gets created and the type of event. I now need to define some action to take when the event fires. $watcher.Path = 'C:\FolderWhereStuffChanges' I do that with the Path property, and since I want the watcher to raise events when one happens, I'll also set the EnableRaisingEvents property to $true. I also need to specify which folder I'll be monitoring. To do that, I'll assign the IncludeSubdirectories property. For example, I'll be monitoring a folder for new files and perhaps I'd like to monitor all subfolders, as well. Once you've instantiated the object, you can then provide various "parameters" to the watcher by assigning values to different object properties. $watcher = New-Object System.IO.FileSystemWatcher
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