Solved

Delete the last line in a Text File using a Bat

Posted on 2009-07-06
6
961 Views
Last Modified: 2012-05-07
I have a number of users on my network who each have a text file(XML) that needs to have the last line of the file removed.

I want to use a batch file to get this done as quickly as possible.

Every users file last line contains "</profiles>" without the quotes.
Attached is a sample of a users XML file I will be working with.

Thanks
<profiles>
  <profile id="0000000003" showindexes="True">
    <name><![CDATA[Bi-Weekly IT Update Agendas]]></name>
    <drawer id="0000000006"><![CDATA[My Files]]></drawer>
    <idxs>
      <idx id="000000000T" mapping="0" listid="19" type="list"><![CDATA[WESLEY]]></idx>
      <idx id="000000000U" mapping="0" listid="154" type="list"><![CDATA[BI-WEEKLY IT UPDATE AGENDA]]></idx>
      <idx id="000000000V" mapping="3" listid="0" type="string"><![CDATA[IT UPDATE AGENDA]]></idx>
      <idx id="000000000W" mapping="4" listid="0" type="date"><![CDATA[]]></idx>
    </idxs>
  </profile>
</profiles>

Open in new window

0
Comment
Question by:Raynovac
  • 3
  • 2
6 Comments
 
LVL 43

Accepted Solution

by:
Steve Knight earned 125 total points
ID: 24788291
well the easiest way to remove a specific line when it can be uniquely identified like this is to use a find command:

del textfile.old 2>NUL
rename textfile.xml textfile.old
type textfile.old | find /v /c "/profiles" > textfile.xml
rem del textfile.old

Any other processing of xml type files line by line with dos is going to be "interesting" due to the use of the < and > chars.

Steve
0
 
LVL 43

Expert Comment

by:Steve Knight
ID: 24788315
Sorry remove the /c there... thats to count the number of lines.  It should have been /I (case insensitive).
Steve
0
 

Author Comment

by:Raynovac
ID: 24788531
I get an error stating the system cannot find the file specified.

Let me set back and explain more fully what I am trying to do.

I have 3 files.
UserProfiles.xml (Located in the users Documents and settings)
profileBuilder.bat (Located on the server and the bat that I am trying to create)
DefaultProfiles.txt (text contains more xml)

I want to removing the last line of the xml file I originally posted and appending the text in the attached code snippet which is more XML which includes the </profiles> closing tag.

I have the appending code correct and I have all the paths to make sure that the user running the script is the only one that will have their XML file changed.

Hope this clarifies what I am trying to do.



   <profile id="2147483646" showindexes="True">
    <name><![CDATA[Test to HOW TO]]></name>
    <drawer id="0000000003"><![CDATA[Library]]></drawer>
    <idxs>
      <idx id="000000000D" mapping="0" listid="10" type="list"><![CDATA[IT]]></idx>
      <idx id="000000000E" mapping="0" listid="68" type="list"><![CDATA[HARDWARE & SOFTWARE]]></idx>
      <idx id="000000000F" mapping="0" listid="88" type="list"><![CDATA[HOW TO]]></idx>
      <idx id="000000000H" mapping="2" listid="0" type="date"><![CDATA[]]></idx>
    </idxs>
  </profile>
</profiles>

Open in new window

0
How our DevOps Team Maximize Uptime

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us. Read the use case whitepaper.

 
LVL 83

Expert Comment

by:oBdA
ID: 24789268
That works actually just fine with for /f. Simply save the script below as "RemoveLastLine.cmd" or Whatever.cmd.
The script expects the file to be shortened as first argument (enclose in double quotes if the path contains a space).
If you want to hardcode the file, you can do so in line 3.
A backup file will be created.
@echo off
setlocal enabledelayedexpansion
set File=%~1
if not exist "%File%" (
  echo Syntax: %~nx0 ^<Filename^>
  echo Removes the last line in ^<Filename^>
  goto :eof
)
for %%a in ("%File%") do (
  set BackupFile=%%~dpna.bak
  if exist "%%~dpna.bak" del "%%~dpna.bak"
  ren "%%~fa" "%%~na.bak"
)
set Line=
for /f "delims=" %%a in ('type "%BackupFile%"') do (
  if not "!Line!"=="" >>"%File%" echo !Line!
  set Line=%%a
)

Open in new window

0
 

Author Closing Comment

by:Raynovac
ID: 31600296
It worked fine, it didn't occur to me to adjust the file names.  I had to adjust it a little to suit my needs but this is what I was pretty much looking for.

Thanks
0
 
LVL 43

Expert Comment

by:Steve Knight
ID: 24789688
No problem, glad it helped... sorry wasn't around for a while there.

Steve
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I was working on a PowerPoint add-in the other day and a client asked me "can you implement a feature which processes a chart when it's pasted into a slide from another deck?". It got me wondering how to hook into built-in ribbon events in Office.
A short article about problems I had with the new location API and permissions in Marshmallow
In this fourth video of the Xpdf series, we discuss and demonstrate the PDFinfo utility, which retrieves the contents of a PDF's Info Dictionary, as well as some other information, including the page count. We show how to isolate the page count in a…

825 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question