Batch file Programming Help required -

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i writing batch file program gets username , password user , checks them comparing them 2 files, username.dat , password.dat.

the username stored in %username% , password in %password%. i'd know is, how check these variables against files username.dat , password.dat?

i've tried using this:

echo %username% >u.dat echo %password% >p.dat comp u.dat username.dat

but value check? mean in c or c++ can check return value, comp?

storing username , password in files seems bad idea me. assuming going way...

there no need echo variables temporary files prior doing comparison. there multiple ways comparison more directly. here 1 method. i'm using delayed expansion supports special characters & | etc in password (or username).

setlocal enabledelayedexpansion set userpassok=1 findstr /x /c:"!username!" username.dat || set "userpassok=" findstr /x /c:"!password!" password.dat || set "userpassok=" if defined userpassok (echo username , password passed) else echo invalid username/password

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