PowerShell is a shell for Windows operating systems, and it was ported to Linux in 2016.



On startup, powershell will run any .ps1 files it finds in the WindowsPowerShell directory under my documents. There is allegedly a Profile.ps1 file in there by default.

$env:Path = "c:\Users\user1\Dropbox\Scripts;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\"


Restart a remote computer

Restart-Computer remotehostname -Force

Find a command that matches a substring

get-command *time*

Get help on commands that match a substring

get-help *time*

Show ACLs of the current dir

get-acl | format-list

Show system BIOS information

Get-WmiObject -ComputerName hostname win32_bios

Show object methods

$foo | Get-Member

Browse the registry

Set-Location HKCU:\Software\Microsoft\Windows\

Show top processes

while (1) { ps | sort -desc cpu | select -first 30; sleep -seconds 1; cls }

Browse the Cert store

Set-Location cert:\CurrentUser\

Get a list of stopped services

Get-Service | Where-Object { $_.Status -eq "Stopped" }

Compare two objects

This will only show the lines that are not common:

Compare-Object $(Get-VIPrivilege -role admin) $(Get-VIPrivilege -role member)

Save object to a csv

Get-Process | Export-Csv -Encoding unicode processes.csv

Load object from a csv and parse it

Import-Csv ./processes.csv | Where-Object { $_.Name -like "*systemd*" } | Select-Object -last 10 | Format-Table

Replacement for unix tail

tail filename

Get-Content [filename] | Select-Object -Last 10

tail -f

Get-Content -Path "C:\scripts\test.txt" -Wait

Replacement for unix wc

Get-Content test.csv | Measure-Object -line -word -character

Replacement for unix time

Measure-Command { Sleep 5 }

Replacement for unix grep -B2 -A1

Get-Content test.csv | Select-String "searchstring" -Context 2,1 -CaseSensitive

Install PowerShell in Ubuntu 18.04

wget -q https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb && \
    dpkg -i packages-microsoft-prod.deb && \
    apt-get update && \
    apt-get install -y powershell

See Also