Citrix, SQL, AD, any open APIs like Slack etc.
| Designed by | Jeffrey Snover, Bruce Payette, James Truher (et al.) |
| Developer | Microsoft |
| First appeared | November 14, 2006 |
| Stable release | 5.1.14393 / August 2, 2016; 8 months ago |
| Preview release | 6.0.0 Alpha 17 / March 8, 2017; 35 days ago |
| Typing discipline | Strong, safe, implicit and dynamic |
| Platform | .NET Framework, .NET Core |
| OS | Windows 7 and later, macOS, CentOS, Ubuntu |
| Filename extensions |
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Microsoft describes PowerShell as “a task-based command-line shell and scripting language… built on the NET Framework.” What is so great about PowerShell? Why should you use it?
1. Navigate the Windows Registry like the file system: cd hkcu:
2. Search recursively for a certain string within files: dir –r | select string “search for this”
3. Find the five processes using the most memory: ps | sort –p ws | select –last 5
4. Cycle a service (stop, and then restart it) like DHCP: Restart-Service DHCP
5. List all items within a folder: Get-Child Item – Force
6. Re curse over a series of directories or folders: Get-Child Item –Force c:\directory –Recurse
7. Remove all files within a directory without being prompted for each: Remove-Item C:\to be deleted –Recurse
8. Restart the current computer: (Get-Wmi Object -Class Win 32_Operating System -Computer Name .).Win32 Shutdown(2)
9. Get information about the make and model of a computer: Get Wmi Object -Class Win 32_Computer System
10. Get information about the BIOS of the current computer: Get-Wmi Object -Class Win 32_BIOS -Computer Name .
11. List installed hot fixes — QFEs, or Windows Update files: Get-Wmi Object -Class Win 32_Quick Fix Engineering - Computer Name .
12. Get the username of the person currently logged on to a computer: Get-Wmi Object -Class Win 32_ Computer System -Property User Name -Computer Name .
13. Find just the names of installed applications on the current computer: Get-Wmi Object -Class Win 32_ Product -Computer Name . | Format-Wide -Column 1
14. Get IP addresses assigned to the current computer: Get-Wmi Object -Class Win32_Network Adapter Configuration -Filter IP Enabled=TRUE -Computer Name . | Format-Table -Property IP Address
15. Get a more detailed IP configuration report for the current machine: Get-Wmi Object -Class Win 32_ Network Adapter Configuration -Filter IP Enabled=TRUE -Computer Name . | Select-Object -Property [a-z]* -Exclude Property IPX*,WINS*
16. Find network cards with DHCP enabled on the current computer: Get-Wmi Object -Class Win32_Network Adapter Configuration -Filter “DHCP Enabled=true” -Computer Name .
17. Enable DHCP on all network adapters on the current computer: Get-Wmi Object -Class Win32_Network Adapter Configuration -Filter IP Enabled=true -Computer Name . | For Each-Object -Process {$_.Enable DHCP()}
18. Install an MSI package on a remote computer:
(Get-WMI Object -Computer Name TARGET MACHINE -List | Where-Object -Filter Script {$_.Name -eq “Win 32_ Product”}).Install(\\MACHINEWHEREMSIRESIDES\path\package. msi)
19. Upgrade an installed application with an MSI-based application upgrade package:
(Get-Wmi Object -Class Win 32_Product -Computer Name . -Filter “Name=’name_of_app_to_be_upgraded'”).Upgrade(\\MACHINEWHEREMSIRESIDES\path\upgrade_package.msi)
20. Remove an MSI package from the current computer:
(Get-WMI Object -Class Win 32_Product -Filter “Name=’product_to_remove'” -Computer Name . ).Uninstall()
21. Remotely shut down another machine after one minute:
Start-Sleep 60; Restart-Computer –Force –Computer Name TARGET MACHINE
22. Add a printer:
(New-Object -Com Object W Script. Network).Add Windows Printer Connection(“\\printer server\hplaser3”)
23. Remove a printer:
(New-Object -Com Object W Script. Network).Remove Printer Connection(“\\printer server\hplaser3 “)
24. Enter into a remote Power Shell session— you must have remote management enabled:
enter-possession TARGET MACHINE
25. Use the PowerShell invoke command to run a script on a remote servers: invoke-command -computer name machine 1, machine 2 -file path c:\Script\script.ps1
Shutdown a computer
Stop-Computer “Computer Name 1, Name 2”
Stop-Computer –computer DC1 –Credential new traders\administrator
Shutdown –i (to restart/shutdown bulk of computer in one shot with message)
Restart-Computer “Computer Name 1”
Get-wmi object –class WIN 32_Operating System –Computer Name .).Invoke method(“Win 32 Shutdown”,0)
Or
(gwmi Win 32_Operating System).Win 32 Shutdown(0).
1.Log Off “0”
2.Forced Log Off “4”
3.Shutdown “1”
4.Forced Shutdown “5”
5.Reboot “2”
6.ForcedReboot “6”
7.Power Off “8”
8.Forced Power Off “12”
Pipe-lining could almost be described as PowerShell’s signature tune.
Piping work almost everywhere in Powershell
PowerShell does not pipe text between commands. Instead, it pipes objects.
Piping is used for several purposes like:- got a focused result, use output of previous command to further within same line, filtering.
PowerShell encourages you to join two statements so that the output of the first clause, becomes the input of the second clause.
Example :- Get-Process
Select or Select-Object
Get-process | Select ID,Process Name
SORTING
Measure-Object / Count
Export-csv/
Get-child item > c:\test1. txt
Get-child item | Out-File c:\test2. txt
Convert To-Html
Convert To-Secure String :- Convert any string into Encrypted form
-As Secure String :- Take input from user in secure way
$var = Read-Host -As Secure String
$var1 = Convert To-Secure String -Secure String $var
Where-Object
if($var -gt 110)
For Each is specially used to fetch elements from an array
While :- As long as the condition remains true, PowerShell reruns the {commandblock} section.
while($val -ne 10) { $val++ Write-Host $val }
Do-While:- First the Command Block will run and then it will check condition
Do {
$val++ Write-Host $val
} while($val -ne 10)
Write-Host is having more attributes
for each($element in 1..9){
Write-Host –No New Line “${element} “
Start-Sleep –Seconds 1
}
Write-Host “”
Output :- Counting from 1 to 9 (in seconds): 1 2 3 4 5 6 7 8 9
Write-Output should be used when you want to send data on in the pipe line, but not necessarily want to display it on screen.
PS C:\> Write-Output “test output” | Get-Member
This command pipes the “test output” string to the Get-Member cmd let, which displays the members of the System. String class, demonstrating that the string was passed along the pipeline.