Explore PowerShell (v) PowerShell basic knowledge _powershell

In PowerShell, we can easily interact with data and objects, and in order to simplify our access to external data, PowerShell allows us to manipulate data, objects, and so on, as we do with 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-in" in PowerShell, with detailed code in the snap-in to implement our various operations. PowerShell even allows us to write our own provider:http://msdn.microsoft.com/en-us/library/cc136763 (vs.85). aspx

We have a lot of ways to manipulate data, such as:

Cmdlet	Function	CMD command	Alias
Get-location	Current directory	Pwd	Gl
Set-location	Change Operation Directory	Cd,chdir	Sl
New-item	Create a new file or folder	No	Ni
Rename-item	Renaming	Rn	Rni
Copy-item	Copy	Copy	Cpi
Move-item	Move	Move	Mi
Remove-item	Delete	Del	Ri
Set-item	Set content	No	Si
Clear-item	Delete Content	No	Cli
Mkdir	Create a new Folder	Md	No
Set-content	Set content	No	Sc
Get-content	Get content	Type	Gc

Psdriver

You can get the current drive list through the Psdriver in PowerShell, and basically all provider have a unique psdriver, but the file system and the registry are exceptions, and the following command allows you to view:

Get-psdriver

Note: the "Name" in the previous illustration does not show a colon (:), but we must add it when we use it, such as Alias:, C:, and so on.

Environment variables

The environment variable in PowerShell is similar to the "set" command in CMD, and you can use the following command to view environment variable settings 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 again. Create a new environment variable:

New-item-path. -Name new-value "New" <enter> 

Next, let's take a look at the "Mode" shown in "Get-childitem".

First digit: D represents folder-Represents directory

Post four digits (A, R, H, s): A archive R Read only h hidden S system-indicates that bit is not set

By default, "Get-childitem" does not display hidden files. Therefore, we need to use the parameter "-force".

<enter>

So what about the new file creation? Let's try the following command:

New-item NewFile

The input file type, "file", "directory", is required, and we use "F" and "D".

Or, use parameters when you are new:

function in the PowerShell

PowerShell provides an engine for us to invoke various functions to implement the function. Let's take a look at our own functions:

CD function: 
Ls

Next, look at the "clear-host" function with the cmdlet you've introduced:

Get-content Clear-host

Therefore, we can for convenience, as far as possible to create some blocks of code to achieve a specific function, the rest to do is just called. Is it convenient? In the following tutorial I will introduce myself to write functions to implement the function call.

Registration Form

In PowerShell we can manipulate the registry like an operation file. PowerShell allows us to operate on 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 Look at it ~

Ls-recurse | Export-csv "D:\Cert.csv"

Well, this section of the content to here ~ things are more miscellaneous, but also relatively trivial, but these will greatly deepen our understanding of PowerShell and understanding, to help us to better learning.

Also to the weekend, I wish you a happy weekend! Thanks for the attention of this blog ~ Thank you!

New-item Newfile-type F