A quick script to email a report about file presence.

check-filepresence.ps1

#this script is to check for the presence of files

#this will populate a variable with the specified format of today's date (see format specifier http://msdn.microsoft.com/en-us/library/8kb3ddd4%28v=vs.110%29.aspx)
$yyyy = $(Get-Date -format yyyy) # "2014"
$mmmm = $(Get-Date -format MMMM) # "September"
$mm = $(Get-Date -format MM) # "09"
$dd = $(Get-Date -format dd) # "22"
  

#if today is Friday
if ($(get-date -format dddd) -eq "Friday") {

  $FilesToCheck = `
  #for file-*, we will be checking yesterday's file
  "\\filey\file-$(get-date -date $((get-date).adddays(-1)) -format MMddyyyy).txt",`
  #for the rest, we will be checking today's file
  "\\filey\file1-mmddyyyy.txt"
  
  
}

#if today is monday
elseif ($(get-date -format dddd) -eq "Monday") {
  $FilesToCheck = `
  "\\filey\file.txt",`
  #for file1-*, we will be checking Saturday's file
  "file1-$(get-date -date $((get-date).adddays(-2)) -format MM-dd-yyyy).txt"

}

#if today is Tuesday, wednesday, or Thursday
else {
  $FilesToCheck = `
  "\\filey\file.txt",`
  "\\filey\file1.txt"

}


#create the presenceinfo object
# http://poshcode.com/paste/555/
$presenceinfo = @()

#check if the files exist
foreach ( $file in $FilesToCheck )
{
  #if file exists:
  try {
    $objfile = get-item $file
    
    $tempobj = New-Object PSObject -Property @{
      Filename = $objfile.name
      Presence = test-path $objfile
    }
  }
  catch {
    $tempobj = New-Object PSObject -Property @{
      Filename = $file.substring($file.LastIndexOf('\')+1,$file.length-$file.LastIndexOf('\')-1)
      Presence = $false
    }
  }
  
  $presenceinfo += $tempobj
  
}


#http://thesurlyadmin.com/2013/01/21/how-to-create-html-reports/
$Header = @"
<style>
TABLE {border-width: 1px;border-style: solid;border-color: black;border-collapse: collapse;}
TH {border-width: 1px;padding: 3px;border-style: solid;border-color: black;background-color: #6495ED;}
TD {border-width: 1px;padding: 3px;border-style: solid;border-color: black;}
.odd  { background-color:#ffffff; }
.even { background-color:#dddddd; }
</style>
<title></title>
"@


send-mailmessage -smtpserver $smtpserver -to $recipient -from $sender -subject "file presence report" -bodyashtml -body ( $presenceinfo | select filename,presence | convertto-html -Head $Header | out-string )