Filter out stacktraces from a logfile and format them nicely

filter-stacktraces.ps1

$inputfile = "C:\path\to\logfile.log"
$outputfile = "C:\path\to\output.log"
$stacktraces = get-content $inputfile | where { $_ -like '{*' } | get-unique
new-item $outputfile -type file -force
foreach($st in $stacktraces) {
  add-content $outputfile (ConvertFrom-Json $st).stacktrace
  add-content $outputfile "`r`n===========================================================================`r`n"
}