PowerShell

Basics

Set Output

Out-File (bash >)

dir | Out-File -FilePath .\output.txt

Copy file

Copy-Item (bash cp)

• Path - specify source
• Destination - specify target
• Include - specify file filter
• Recurse - invoke recursively (bash -r)
• Force - always overwrite (bash -f)
• Confirm - prompts before running the cmdlet
• PassThru - return an object (and by the way e.g. its path)

Copy-Item `
  -Path "./source/directory/*" `
  -Destination "./target/directory" `
  -Include "*.jar" `
  -Recurse `
  -Confirm `
  -PassThru

Remove file

Remove-Item (bash rm)

Remove-Item ./file.txt

String interpolation

$VERSION = "2.1.1-SNAPSHOT"
$jarFile = "myapp-$VERSION.jar"

Download File

Invoke-WebRequest (bash curl)

• $ProgressPreference = 'SilentlyContinue' - Disable progress bar

Invoke-WebRequest localhost:8080/archive.zip -OutFile ./logs.zip

Alternative

iwr localhost:8080/archive.zip -o logs.zip

Various

Check if file exists

if (Test-Path -Path $TARGET_FILE -PathType Leaf)
{
    # ...
}

Shell behavior config

Enable debugging

Set-PSDebug -Trace 1 (bash set -x)

Stop execution on first error

$ErrorActionPreference (bash set -e)

$ErrorActionPreference = "Stop"

PowerShell Profile

Get location of PowerShell Profile

• Note that this location actually may not contain any file - in such case it will be needed to create it manually

$PROFILE

Create PowerShell Profile if not exist

• Creates Microsoft.PowerShell_profile.ps1 file

New-Item -path $PROFILE -type File -force