How to read a file with delimitted name value pairs using DOS batch script?

Question

I have a file with each line of the format name=value. I need to read it using a DOS script and store all the name value pairs in memory. The names are from a predefined list of names, so I can have a list of DOS variables, and assign values to them as and when a line is read from the file. Please provide the script for doing this. I'm not able to even do as much as read a file using the below code which I got on the internet, it printes nothing: FOR /F %i IN (regfort.properties) DO @echo %i

To run this from a batch script instead of the command prompt, double your percentage signs: FOR /F %%i IN (regfort.properties) DO @echo %%i. Be aware that this test only echoes the first token of each line… — mousio
– mousio, Commented Apr 11, 2011 at 8:17

mousio · Accepted Answer · 2011-04-11 08:40:52Z

3

This is a very simple script that sets some environment variables (names prefixed with prop_) based on the name/value pairs in the specified file, i.e. name=value in the file becomes prop_name=value in the environment:

setlocal disabledelayedexpansion
FOR /F "tokens=1* delims==" %%i IN (regfort.properties) DO set "prop_%%i=%%j"

Running set prop_ will then display the names and values of all variables with name prefix prop_.

answered Apr 11, 2011 at 8:40

mousio

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