In PowerShell, we can easily interact with data and objects. In order to simplify our access to external data, PowerShell allows us to operate data, objects, etc. like operating drives and files.
Use this command to view our existing Providers:
get-psprovider
In fact, each Provider is a dynamic link library (.dll), which can also be called a "snap unit" in PowerShell. In the snap-in, there is detailed code to implement our various operations. PowerShell even allows us to write our own provider:/en-us/library/cc136763(VS.85).aspx
We have many ways to operate data, etc., for example:
| cmdlet | Function | cmd command | alias |
| get-location | Current directory | pwd | gl |
| set-location | Change the operation directory | cd,chdir | sl |
| new-item | Create a new file or folder | none | ni |
| rename-item | Rename | rn | rni |
| copy-item | copy | copy | cpi |
| move-item | move | move | mi |
| remove-item | delete | del | ri |
| set-item | Set content | none | si |
| clear-item | Delete content | none | cli |
| mkdir | Create a new folder | md | none |
| set-content | Set content | none | sc |
| get-content | Get content | type | gc |
PSDriver
You can get the current drive list through the PSDriver in PowerShell. Basically all providers have a unique PSDriver, but the file system and registry are exceptions. Check it through the following command:
get-psdriver
Note: The "Name" in the figure above does not display a colon (:) when it is displayed, but when we use it, we must add it, such as alias:, c:, etc.
Environment variables
The environment variables in PowerShell are similar to the "set" command in CMD. You can use the following command to view the settings of the environment variables on the current machine:
cd env:
ls
We try to get the values of some environment variables.
ls OS
Show all properties:
ls OS | format-list *
Try creating a new environment variable:
new-item -path . -Name New -Value “New”<enter>
Next, let's continue to understand the "Mode" displayed when "get-childitem".
First position: d represents folder - represents directory
The last four bits (a, r, h, s): a archive r read-only h hides s system - means that this bit is not set
By default, "get-childitem" does not display hidden files. Therefore, we need to use the parameter "-force".
ls -force <enter>
So what about the newly created file? Let's try the following command:
new-item newfile
At this time, you need to enter the file type, namely "file" and "directory", and we just need to use "f" and "d".
Or, use parameters when creating new:
Function in PowerShell
PowerShell provides an engine for us to call various functions to implement functions. Let's take a look at the built-in functions:
cd function:
ls
Next, use the cmdlets I introduced before to see the content of the "clear-host" function:
get-content clear-host
Therefore, for convenience, we can create some code blocks as much as possible to implement specific functions, and all we have to do is call it. Isn't it very convenient? In the following tutorial, I will introduce in detail the writing of functions to implement function calls.
Registration form
In PowerShell we can operate the registry like a file. PowerShell allows us to operate HKCU and HKLM.
HKCU:HKEY_CURRENT_USER
HKLM:HKEY_LOCAL_MACHINE
Try the following command:
cd hklm:
cd software
ls
Certificate
cd cert:
ls
Export and take a look~
ls -Recurse | Export-CSV “d:\”
Okay, that's all for this section. The things are complicated and trivial, but these will greatly deepen our understanding and understanding of PowerShell to help us learn better in the future.
It’s the weekend, I wish you all a happy weekend! Thank you for your attention to this blog~ Thank you!
new-item newfile -type f