# Learn Powershell in Less Than 2 hours

**Everything in Powershell is an Object**

## Widows Powershell ISE

To be able to write Powershell script you have a free IDE

## CMDLET

Predifine functions are names CommandLet
Verb-Noun -Parameters

If you want to see all the Cmdlet available

```
Get-Command -CommandTyper Cmdlet
```

## PSVersionTable

you can see the version of powershell with the command 

```powershell
$PSVersionTable
```

## ExecutionPolicy

To be able to see if you can run your Powershell scripts

```powershell
Get-ExecutionPolicy
# Work only has administrator
Set-ExecutionPolicy remoteSigned
```

### Write-Host

For writing in the console

```powershell
Write-Host "Hello world"
Write-Host "Hello world" -NoNewline
Write-Host "Hello world" -BackgroundColor "Blue"
```

## GetHelp

Print all the help articles from microsoft

```powershell
Get-Help
Get-Help Write-Host -full
```


## Piping

You can chain commands with "|"

```powershell
Command-1 | Command-2
"May the force be with you!" | Out-File forewithwho.txt
```


## Variables

They start with a "$"
you can use strings,floating points, integer and boolean

```powershell
$FavCharacter = "Spongebob"
$FavCharacter | Out-File favcharacter.txt
$FavCharacter.GetType()

$x = 5
$y = 3
$x + $y
# output: 8

$FavCharacter | Select-Object -Property *
# output all the Property of the variable 
Get-Member -InputObject $FaveCharacter
# output all the mehtods you can use 
```

## Arrays

A collection of variables

```powershell
$Jedi = @('Obi-Wan Kenobi', 'Luke Skywalker', 'Master Yoda', 'Mace Windu')

$Jedi.GetType()
# output Object[]

$Jedi[0]
# output : Obi-Wan Kenobi

$Jedi[0].Length
# output 14

$Jedi += 'Qui-Gon Jin'
# add a variable to the array
```

## hash table

Specify keys

```powershell
$FellowshipBeta = @{key1 = "item1"; key2 = "item2"}

$Fellowship = @{"Wizard" = "Gandalf"; "Elf" = "Legolas"; "Hobbit" =  "Frodo"}

$Fellowship.Add("Dwarf", "Gimli")
# for adding an element

$Fellowship.Set_Item("Dwarf", "Bilbo")
# changing an element

$Fellowship."Dwarf"
$Fellowship.["Dwarf"]
# retrieve an element

$Fellowship.Remove("Dwarf")
# Remove an element
```

## Read-Host
 for having user iput

## Evaluatig

```powershell

$PokemonCaught = "908"
If($PokemonCaught -eg 908) { Write-Host "You're a Pokemon Master! "}
```