I have been searching through StackOverflow but could not find an answer that hits the mark. I have 2 .txt files to compare and return a 3rd one where differences exist.
However, only the first column of the first 2 files need a comparison.
E:\Compare_flie\file_1.txt
GND ZERO
22XC44 XXYYZZ
33XC55 YYUUTT
E:\Compare_file\file_2.txt
GND ZERO
22XC44 KK77UU
33XC55 88JJ66
66NN77 HHOO99
99CC88 UU77RR
E:\Compare_file\file_3.txt (intended output)
66NN77 HH0099
99CC88 UU77RR
Tried the code below but it is only good at picking out the differences of all the strings in the line
%echo on
findstr /v /i /g:E:\Compare_files\file_1.txt E:\Compare_files\file_2.txt
> E:\Compare_files\file_3.txt
Refined it further but not hitting the mark yet.
%echo on
for /f "tokens=1 delims= " %%I in ("E:\Compare_files\file_1.txt") do
findstr /v /i "%%I"/g:"D:\Compare_files\file_2.txt"
> "D:\Compare_files\file_3.txt"
Appreciate if anyone can assist.
@ECHO OFF
SETLOCAL
SET "sourcedir=U:\sourcedir"
SET "destdir=U:\destdir"
SET "filename1=%sourcedir%\q48816766.txt"
SET "filename2=%sourcedir%\q48816766_2.txt"
SET "tempfile=%temp%\q48816766.tmp"
SET "outfile=%destdir%\outfile.txt"
(FOR /f "usebackq" %%a IN ("%filename1%") DO ECHO %%a )>"%tempfile%"
FINDSTR /b /v /g:"%tempfile%" "%filename2%">"%outfile%"
REM DEL "%tempfile%" /F /Q
GOTO :EOF
I've set up names to suit my system, but with the two files containing your data.
Obviously, the usebackq on the for/f is only required if the filename is quoted. The parentheses around the command permit the echoed output to be accumulated into the temporary file. What's important here is the space between the %%a and ). This ensures that the temporary file contains trailing spaces.
Then apply the temporary file to the second data file via /g as in OP's code. The presence of the trailing spaces in the tempfile ensure that the only lines selected for omission are those where the first column exactly matches so for instance had 66NN7 appeared in the first file, first column, then this would not match 66NN77 in the second file.