Replace field value in property file using batch - batch-file

Question

Can anyone help me to replace a field value in property file using batch.
I have this field in my application.properties file: accessKey=AKIAJ2Q and I want to replace it with accessKey=XXXXX
I tried with sed command as recommanded here but it didn't work. The send command is not recognized by windows 10.
I tried also the following code:
SET key="XXXXX"
FOR /F %i IN (application.properties) DO SET accessKey=%key%
pause
Any help would be appreciated.
Thanks

Answer 1

There is surely a way to replace a string inside a txt/properties file using pure batch.
Taking above example to replace accessKey in application.properties
file.
#ECHO OFF
SETLOCAL
SET "sourcedir=C:\<Add directory path of application.properties>"
(
FOR /f "usebackqdelims=" %%a IN ("%sourcedir%\application.properties") DO (
FOR /f "tokens=1*delims==" %%g IN ("%%a") DO (
IF /i "%%g"=="accessKey" (
ECHO(%%g=xxxx
) ELSE (
ECHO(%%a)
)
)
)>application_new.properties
:: This new file now contains a modified version.
rem ECHO(MOVE /y application_new.properties "%sourcedir%\application.properties"
GOTO :EOF

Answer 2

There is no way to "replace" something inside a text file with pure batch. You could use a 3rd party tool like Find'n'Replace or even some PowerShell commands. But what you can do is to "copy" the text file into a temp file while replacing the token you are looking for. Afterwards you can delete the original file and replace it with the temporary one. Here is the code:
#echo off
setlocal enabledelayedexpansion
set sourcefile=something.txt
set tempfile=tempfile.txt
set oldtoken=AKIAJ2Q
set newtoken=XXXXX
type nul>%tempfile%
for /f "tokens=*" %%l in (%sourcefile%) do (
set line=%%l
set line=!line:%oldtoken%=%newtoken%!
echo !line!>>tempfile.txt
)
del %sourcefile%
move %tempfile% %sourcefile%