# Parse netsh output like this into a hashtable so can easily use in scripts, etc
#   Transmit rate (Mbps)   : 57.8
[hashtable]$wlan = @{};netsh.exe wlan show interfaces | ForEach-Object{ if( $_ -match '(\w[^:]+):\s+?(\w.*)$' -and ! [string]::IsNullOrEmpty( $matches[2] ) ) { $wlan.Add( $matches[1].Trim() , $matches[2] )}}

# Using the above to implement a signal strength monitor that updates every 5 seconds
While($true){ [hashtable]$wlan = @{};netsh.exe wlan show interfaces | ForEach-Object{ if( $_ -match '(\w[^:]+):\s+?(\w.*)$' -and ! [string]::IsNullOrEmpty( $matches[2] ) ) { $wlan.Add( $matches[1].Trim() , $matches[2] )}} ; "{0} {1} {2:4} {3}" -f (Get-Date -Format G) , $wlan.SSID , $wlan.Signal , ( "$([char]4)" * [int]($wlan.Signal -replace '%') ) ; start-sleep 5 }