powershell-azure-cli-demo

powershell-azure-cli-demo.ps1

#!/usr/bin/env pwsh

# Very very small demo of Powerhell and how to use
# Azure CLI from within it.

# These should be required for all scripts.
# The first says to stop at any failure, almost same as bash 'set -e'
# except it does not apply to external commands unfortunately.
# The second one is to make sure informational messages are written.
# See: https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_preference_variables?view=powershell-7
$ErrorActionPreference = "Stop"
$InformationPreference = "Continue"

# Use this instead of echo
Write-Information "Demo for Powershell"

try {
    # This normally terminates the script.
    # But we can wrap it in try/catch
    Write-Error "This will terminate the script"
} catch {
    # $_ gets the error
    Write-Information "Ingored the error: $($_)"
}

# Call out to Azure CLI and access JSON output in Powershell.
# Az CLI returns JSON by default. For 'az account show' it
# will be like so:
#  {
#     "environmentName": "REDACTED",
#     "id": "REDACTED",
#     "isDefault": true,
#     "name": "REDACTED",
#     "state": "Enabled",
#     "tenantId": "REDACTED",
#     "user": {
#       "name": "REDACTED",
#       "type": "user"
#     }
#   }
$x = &az account show | ConvertFrom-Json
if (!$?){
    # Handle any errors like so. Equivalent to bash test for $?.
    # Unfortunately there is no equivalent to bash 'set -e' for
    # external commands
    Write-Error "Error getting account information."
}

# If the above succeeded, get JSON properties like so
$userName = $x.user.name
Write-Information "Azure user name is: $userName"

Write-Information "This is the end of the short demo."
Write-Information "Good luck lol 🤣🤣😅🍺🍺"