Batch - FOR loop issue

Question

The file which I am processing (param.txt) is tab delimited and the contents of the first column are _ delimited.

param.txt

ONE_one  two  three
FOUR_four  five  six
SEVEN_seven  eight  nine

I've created below script to process this file:

@echo off & setlocal enableextensions enabledelayedexpansion
for /f "tokens=1,2,3 delims=    " %%G in ('type param.txt') do (
  for /f "tokens=1 delims=_" %%a in ('echo %%G') do (
    echo %%a -- %%b -- %%H -- %%I
  )
)
endlocal & goto :EOF

This produces the below output:

ONE -- %b -- two -- three
FOUR -- %b -- five -- six
SEVEN -- %b -- eight -- nine

What needs to be rectified in the script to get it to print the "value" instead of %b?

JRL · Accepted Answer · 2012-05-08 13:16:36Z

2

Try replacing tokens=1 with tokens=1,2.

Note also that you can do the extraction with a single for loop, since you can specify multiple delimiters:

for /f "tokens=1,2,3,4 delims=_ " %%G in ('type param.txt') do (
  echo %%G -- %%H -- %%I -- %%J
)

edited May 8, 2012 at 13:16

answered May 8, 2012 at 13:10

JRL

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Comments

dbenham · Accepted Answer · 2012-05-08 13:18:57Z

0

JRL got the correct answer given the scenario you presented.

If a value in your 1st column ever might contain a value like "seven_seven_seven", then you probably only want to break on the first _. In that case you want to use "tokens=1*" in your 2nd FOR statement. That way %%b will contain "seven_seven".

answered May 8, 2012 at 13:18

dbenham

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