# Need to split up a large patterned text file into multiple text files.

Hello,

I have a 5200 line text file full of DNS zone information.  It is formatted such with line 1 being the SOA record, and the last 2 lines of the zone are "Success..." and then "----" and then it repeats with the next zone.  An example of the top 2 records looks like the following:

domain1.com. SOA dauth5.server.com. contact.domain1.com. 2018020603 10800 3600 604800 10800
webmail.domain1.com. CNAME  domain1.com.
domain1.com. NS  dauth5.server.com.
domain1.com. MX 10 mail3.serverhosting.com.
domain1.com. A  255.255.138.2
mail.domain1.com. CNAME  mail3.serverhosting.com.
pop.domain1.com. CNAME  pop.serverhosting.com.
domain1.com. MX 10 mx1-us1.ppe-hosted.com.
www.domain1.com. CNAME  domain1.com.
domain1.com. NS  dauth6.server.com.
domain1.com. MX 20 mx2-us1.ppe-hosted.com.
smtp.domain1.com. CNAME  smtp.serverhosting.com.
SUCCESS: Getting information for Domain 'domain1.com' complete.
---------------
domain2.com. SOA dauth5.server.com. admin.server.com. 2018052503 900 600 86400 10800
domain2.com. A  192.168.255.2
domain2.com. MX 20 mx2-us1.ppe-hosted.com.
domain2.com. MX 10 mx1-us1.ppe-hosted.com.
www.domain2.com. CNAME  domain2.com.
mail.domain2.com. CNAME  mail4.serverhosting.com.
domain2.com. NS  dauth5.server.com.
domain2.com. NS  dauth6.server.com.
SUCCESS: Getting information for Domain 'domain2.com' complete.
---------------


I would like a powershell script that will take my file as in input, then split the file into multiple text files saved to a specific path.  The file name should be the very first word on line1 (domain1.com.text and domain2.com.text in the scenario above), then they should contain all lines up to the "Success:, and the following------" lines.  Those can be discarded.  So after processing the script given the text file above, I would be left with the following:

c:\temp\domain1.com.txt which would look like:
domain1.com. SOA dauth5.server.com. contact.domain1.com. 2018020603 10800 3600 604800 10800
webmail.domain1.com. CNAME  domain1.com.
domain1.com. NS  dauth5.server.com.
domain1.com. MX 10 mail3.serverhosting.com.
domain1.com. A  255.255.138.2
mail.domain1.com. CNAME  mail3.serverhosting.com.
pop.domain1.com. CNAME  pop.serverhosting.com.
domain1.com. MX 10 mx1-us1.ppe-hosted.com.
www.domain1.com. CNAME  domain1.com.
domain1.com. NS  dauth6.server.com.
domain1.com. MX 20 mx2-us1.ppe-hosted.com.
smtp.domain1.com. CNAME  smtp.serverhosting.com.


and c:\temp\domain2.com.text which would look like:
domain2.com. SOA dauth5.server.com. admin.server.com. 2018052503 900 600 86400 10800
domain2.com. A  192.168.255.2
domain2.com. MX 20 mx2-us1.ppe-hosted.com.
domain2.com. MX 10 mx1-us1.ppe-hosted.com.
www.domain2.com. CNAME  domain2.com.
mail.domain2.com. CNAME  mail4.serverhosting.com.
domain2.com. NS  dauth5.server.com.
domain2.com. NS  dauth6.server.com.


I think I will end up with a few hundred text files, but this would save me a ton of time!  Thanks in advance!
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IT / Software Engineering ConsultantCommented:
Here's a straight forward approach with PS.  I'm sure a shorter more cryptic version could be fashioned, but this seems to get the job done here.   Adjust the paths near the top and give it a try.

$InFile = "B:\EE\EE29138324\in.txt"$DestDir = "B:\EE\EE29138324"
$Data = Get-Content$InFile
$OutFile = "" foreach($Line in $Data) { if($Line.SubString(0,8) -eq "SUCCESS:" -or $Line -eq "---------------"){$OutFile = ""
} else {
if($OutFile -eq "") {$OutFile = $Line.Split()[0].TrimEnd('.') }$Line >> "$DestDir\$OutFile.txt"
}
}


»bp

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Principal: ITCommented:
I prefer to code functions to make the utility more flexible and straightforward to move to a module. I have assumed that the line before the -------- separator is always SUCCESS, is it sometimes FAILURE?
function ConvertTo-SplitDNSZoneInfoFile
{
[CmdletBinding()]
Param
(
[String]$InputFilePath = "D:\DNSZoneInfo\DNSZoneInfo.txt", [String]$OutFileDirectory = "D:\DNSZoneInfo"
)

if ((Test-Path $InputFilePath) -and (Test-Path$OutFileDirectory))
{
$InputFile = Get-Content$InputFilePath
$OutFileName = "" foreach ($line in $InputFile) { if ([String]::IsNullOrEmpty($OutFileName))
{
if ($line -notlike "--*") {$OutFileName = $line.Split(" ")[0] + "txt"$OutFilePath = Join-Path -Path $OutFileDirectory -ChildPath$OutFileName
}
}
else
{
if ($line -like "SUCCESS*" -or$line -Like "--*")
{
$OutFileName = "" } else {$line | Out-File $OutFilePath -Append } } } } else { Write-Warning "Unable to find either$InputFilePath or $OutFileDirectory" } } ConvertTo-SplitDNSZoneInfoFile  Author Commented: Bill - Using your method, the top line of the resulting text files is missing...example: domain1.com. SOA dauth5.server.com. contact.domain1.com. 2018020603 10800 3600 604800 10800 Doesn't appear in the resulting file on any of the files created. The first line should always be the SOA line. Brent - Using your method, the SOA line does appear, but not in order...its like the order gets mixed up and the SOA line appears on line 5 or 6 but not line 1 each time as it should? IT / Software Engineering ConsultantCommented: I tested with what you posted and it worked fine here, my test files attached. If you want to post your actual input file I can test here, it may be that that first line has some extra special characters that are causing a problem... in.txt domain1.com.txt domain2.com.txt »bp Author Commented: I took your in file and and appended 2 real records to it and I have the same results, very odd...no SOA line at the top of any of the resullting file... dom_dns.txt 1talltrees.com.txt 456jobs.com.txt domain1.com.txt domain2.com.txt IT / Software Engineering ConsultantCommented: I took your dom_dns.txt file, ran it through the script I posted here, and the 4 result files have the first line here. What version of powershell do you have? And did you make any changes to the script I posted? »bp Author Commented: Can't explain it...but it is working now. I just re-copied the script and changed lines 1 and 2 and re-ran the script and SOA shows up as line #1 now. Sorry for wasting your last 30 minutes! Thanks so much for the help! IT / Software Engineering ConsultantCommented: No worries, glad it's working there now. »bp Principal: ITCommented: I checked my code and it consumed the first line when changing the output file name rather than outputting it. I have also added a switch to indicate that you want to delete the output file if it exists. function ConvertTo-SplitDNSZoneInfoFile { [CmdletBinding()] Param ( [String]$InputFilePath = "D:\DNSZoneInfo\DNSZoneInfo.txt",
[String]$OutFileDirectory = "D:\DNSZoneInfo", [Switch]$Clobber
)

if ((Test-Path $InputFilePath) -and (Test-Path$OutFileDirectory))
{
$InputFile = Get-Content$InputFilePath
$OutFileName = "" foreach ($line in $InputFile) { if ([String]::IsNullOrEmpty($OutFileName))
{
if ($line -notlike "--*") {$OutFileName = $line.Split(" ")[0] + "txt"$OutFilePath = Join-Path -Path $OutFileDirectory -ChildPath$OutFileName
if ($Clobber -and (Test-Path$OutFilePath))
{
Remove-Item $OutFilePath } } } if ($line -like "SUCCESS*" -or $line -Like "--*") {$OutFileName = ""
}
else
{
$line | Out-File$OutFilePath -Append
}
}
}
else
{
Write-Warning "Unable to find either $InputFilePath or$OutFileDirectory"
}
}

ConvertTo-SplitDNSZoneInfoFile -Clobber

Author Commented:
Thanks again, and Brent the second one worked out great as well!
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