Check Environment Variable Value in Powershell

Question

I am trying to check whether the system has a particular environment variable value that contains a particular string; e.g.:

C:\Program Files\Java\jre1.8.0_271\bin

I found how to check whether an environment variable exists or not:

if ([Environment]::GetEnvironmentVariable('path', 'Machine'))
{
  "Exist in the system!"
}

This works, but I need to know how to check whether the value contains a particular substring or not.

How to get environment variable value using PowerShell?

postanote
– postanote

2020-11-11 21:41:33 +00:00
Commented Nov 11, 2020 at 21:41 — postanote
– postanote, Commented Nov 11, 2020 at 21:41

JPBlanc · Accepted Answer · 2020-11-11 19:21:04Z

5

You can try :

$pathContent = [Environment]::GetEnvironmentVariable('path', 'Machine')
$myPath = "C:\WINDOWS\system32"
if ($pathContent -ne $null)
{
  # "Exist in the system!"
  if ($pathContent -split ';'  -contains  $myPath)
  {
    # My path Exists
    Write-Host "$myPath exists"
  }
  else
  {
    Write-Host "$myPath does not exist"
  }
}

The -split operator generate an array of strings in which the -contains operator test if $myPath is inside.

answered Nov 11, 2020 at 19:21

JPBlanc

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