Extract section of a text file

Question

I am trying to write a batch file that will extract lines 6000 to 6999 in a give text file. From googling I have come accross the following code - however this is giving me a blank output file.

@echo off 
SetLocal EnableDelayedExpansion
type nul > nodedata.txt
set StartText=6000
set EndText=7000
set Flag=0
for /f "tokens=* delims=" %%a in ('type out.txt') do (
if /i "%StartText%" EQU "%%a" (set Flag=1) 
if /i "%EndText%" EQU "%%a" (set Flag=0) 
if !Flag! EQU 1 echo %%a >> nodedata1.txt
)

Any ideas as to where I am going wrong?

score 2 · Answer 1 · answered Nov 13 '12 at 12:42

2

Here is a quick and simple pure batch solution

for /l %%a in (6000,1,6999) do (
more C:\file.txt +%%a >>C:\extracted.txt
)

answered Nov 13 '12 at 12:42

Bali C

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Your solution execute `more` command 1000 times, and each time open the output file and seeks for EOF to append the next line. This is not efficient... – Aacini Nov 13 '12 at 16:57

score 1 · Accepted Answer · edited May 23 '17 at 12:27

1

You should install unxutils and then see answers for this question... Windows is just not made for text processing...

A Windows user...

edited May 23 '17 at 12:27

Community

1
1

answered Nov 13 '12 at 12:28

Vajk Hermecz

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If Microsoft made a utility for this, it would spew messages like `Found 6000 in foo.txt. Copying Line 6000. Copying line 6001. ... Copying line 6999. 1000 line(s) copied.` These would be mingled with the output, and require an option to disable them. – Kaz Oct 16 '13 at 18:56

score 1 · Answer 3 · answered Nov 13 '12 at 16:55

1

This is a Batch solution that run faster...

@echo off
SetLocal EnableDelayedExpansion
set count=0
(for /F "skip=5999 delims=" %%a in (out.txt) do (
   echo %%a
   set /A count+=1
   if !count! equ 1000 goto endLoop
   )
) > nodedata1.txt
:endLoop

answered Nov 13 '12 at 16:55

Aacini

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Extract section of a text file

3 Answers3