PowerShell Basic Scripts

Powershell Basic Scripts, before we learn Powershell Basic scripts, first we need to understand the script execution policy.  What does it mean,  Powershell console or window has 4 main execution policies for any script to run.

Here are the execution policies.

AllSigned

if the is execution policy is set then all the scripts run, however, all scripts are signed by a trusted publisher, including the scripts that you run on your local machine.

Restricted

This is default execution policy, it allows only individual commands to run, it doesn’t allow the scripts.

RemoteSigned

This is a default execution policy for server-based operating systems. All scripts are allowed to run.

If you set this execution policy then you need to have any digital signature on the scripts that you run on your local machine. However, if you want to run the scripts download from the internet then it requires a digital signature from a trusted publisher.

Bypass

If you have set your Powershell execution as Bypass then nothing is blocked and no warnings, all scripts are allowed to run.

Let’s work on the commands now, to get what policy is on your machine currently use get-executionpolicy.

Let’s change the execution as remote signed, I recommend to use this policy for good security and compliance and again you can easily change the execution policy as per your need anytime!

let’s write a one-line Powershell output command

write-host “I’m learning Powershell on techdiip.com”

let’s find a service status

There is a cmdlet that we use to retrieve service status is….

get-service -Name AdobeFlashPlayerUpdateSvc

If you want to see the Methods and Properties of this command then we have to use…

get-service | get-Member

on the result screen, you get the below.

Let’s how we can get help from powershell.

There is command get-help that gives all the information about any command available in the Powershell.

get-help | format-table

The above command gives detailed information on how format-table is useful.

Here is the Powershell terminology one must know before we start diving into other topics.

1	.PS1	This is a powershell extension and all powershell files saved with this extension and opened only in powershell.
2	Cmdlets	The commands available in the powershell we call cmdlets, we have to import modules to get with respective tasks or application automation.
3	Confirm	This gives a pop-up asking us to confirm while executing the code or script
4	Debug	This command gives us debug information, this is helpful for troubleshooting the script.
5	ErrorAction	This is the default variable available in the powershell and most useful when you dealing with errors.
6	ErrorVariable	This is a default variable and holds errors information of powershell code
7	Functions	Powershell functions are the most lightweight form of powershell command, it’s a grouping of code runs against each object defined (within that code) in the script block and performs the specified action. Powershell functions help the administrator to create reusable code which acts as powershell cmdlets.
8	OutBuffer	This command gives the object count and uses when you are dealing with the pipeline.
9	OutVariable	This command gives us the information of a variable which holds output information
10	Scripts	The powershell scripts extension ends .ps1 and we can’t directly open it, we have to edit and run in powershell interface itself.
11	Verbose	This command gives us detailed information of a task while executing the script.
12	What if	This is a command (cmdlet) that gives information about what happens if you execute code or command.

Thank you for reading this article, if you have any questions please let us know.

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