Powershell

Powershell Cheat Sheet for beginners

Powershell Cheat Sheet for beginners

PowerShell has become something of an ace in the hole when it comes to performing commands on Windows. For years, Windows command line fans were restricted, but PowerShell emerged as a formidable alternative in 2006.

What is PowerShell in Windows?

Microsoft created PowerShell as an interactive Command-Line Interface (CLI) and automation engine to aid in system configuration and administrative task automation.

This utility comes with its own command line and a programming language that is comparable to Perl. PowerShell was originally created to manage things on users’ computers.

Today PowerShell … Read the rest

Can you use Linux commands in Powershell?

Today we discuss one of a few questions a lot of sysadmins and IT Admins ask?

Can you use Linux commands in Powershell?

The Windows Subsystem for Linux (WSL) was a big step forward in this regard, allowing developers to call Linux commands from Windows via wsl.exe (e.g. wsl ls). While an improvement, the experience falls short in various ways:

  1. It’s inconvenient and strange to use wsl to prefix commands.
  2. WSL login profiles with aliases and environment variables do not honour default parameters.
  3. Backslashes are sometimes misinterpreted as escape characters rather than directory separators in Windows paths supplied as arguments.
Read the rest

Powershell Get-Eventlog Get-Process and Stop-Process commands

Get-EventLog

We use PowerShell to parse your Server’s/computers event logs using the Get-EventLog cmdlet. There are several parameters available. Use the -Log switch followed by the name of the log file to view a specific log.

For example we can use the following command to view the Application log:

Get-EventLog -Log "Application"

Few options we have with Get-Eventlog options

-Verbose
-Debug
-ErrorAction
-ErrorVariable
-WarningAction
-WarningVariable
-OutBuffer
-OutVariable

Get-WinEvent with filter for event id

PowerShell’s Get-WinEvent cmdlet is a powerful method to filter Windows event and diagnostic logs. Performance improves when a Get-WinEvent is used with filters like =FilterHashtable  with logname … Read the rest

What is powershell execution policy?

What is powershell execution policy?

The PowerShell execution policy was created with the goal of being administrator-friendly while also being accessible to end users. The latter goal, more than the former, was a little more difficult to achieve, given that convenience is typically inversely proportionate to security.

Malicious VBS (Visual Basic Script) files disguised as useful bits of software have been sent around in emails on occasion. Unsuspecting users double-clicked the script files, falling for scams ranging from letting the script’s creator know you executed the script to giving the script’s creator entire access over your machine.

The script can … Read the rest

How to concatenate string in powershell?

How to concatenate string in powershell?

 

1. Concatenate string Use -join

$var = -join(“Hello”, ” “, “world”);

Stores  “Hello world” to $var.

So to output, in one line:

Write-Host (-join(“Hello”, ” “, “world”))

2. Concatenate string using “-“

Write-Host “$($products.Id) – $($products.Name) – $($products.Owner)”

3. Concatenate string using indirectly with “-“

Write-Host (“{0} – {1} – {2}” -f $products.Id,$products.Name,$products.Owner )
Or just (but I don’t like it 😉 ):

Write-Host $products.Id ” – ” $products.Name ” – ” $products.Owner

 

4. Concatenate string using “+”

$string = $products.ID
$string += ” – ”
$string += $products.Name
$string += ” … Read the rest

How to Find a string inside a string -PowerShell Substring

The PowerShell Substring : Finding a string inside a string

There are many occassions where Administrators need to figure out a way to find a certain snippet of text inside a string which is called the substring. PowerShell makes finding a substring extremely easy.

How are Strings handled in PowerShell?

A string in PowerShell is a collection of characters contained in single or double quotes. Strings examples  are  say “Adam” and “Bharat”.
Let’s imagine you have a string defined in a variable and you only need to find a portion of it. As an example, suppose you had a string … Read the rest

How to use PowerShell Multiple-Line Comments

How to use PowerShell Multiple-Line Comments?

Use Windows PowerShell multiple line comments in your script or from the console. It is good for debugging for later using it multiple times reuse in other scripts.

Syntax:

Begin the comment with the <# tag, and end the comment with the #> tag:

<# this is a comment on several different lines #>

 

When we enter # on each line or the “#” and “#>” to surround each code block in a remark block

Now PowerShell Studio 2014 makes comments easier.

  1. To individually comment out each line (#)
  2. select one or more
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Powershell Sleep – How to Pause a Script

Powershell Sleep or Pause – How to Pause or sleep a Script?

You may need to pause your PowerShell script for a few seconds from time to time. When you use a do while loop to check if a server is back online, for example. The PowerShell Start Sleep cmdlet can be used to accomplish this. We can put the script to sleep for a few seconds using this command.
In this article, I’ll show you how to utilize the PowerShell Sleep command with a handful of examples.
Using the Start Sleep cmdlet in PowerShell

The start-sleep cmdlet in PowerShell … Read the rest