Compare the contents of two files or sets of files. Display any lines which do NOT match.
FC /B pathname1 pathname2
FC [options] pathname1 pathname2
/B : Perform a binary comparison.
/C : Do a case insensitive string comparison
/A : Displays only first and last lines for each set of differences.
/U : Compare files as UNICODE text files.
/L : Compares files as ASCII text. (default)
/N : Display line numbers (ASCII only)
/LBn: Limit the number of lines that will be read, "n" sets a maximum number
of mismatches after which the File Comparison will abort (resync failed)
When FC aborts (resync failed) then "n" number of mismatches will be shown.
/nnnn : Specify a number of consecutive lines that must match after a mismatch.
This can be used to prevent the display of the two files from getting
too out of sync
/T : Do not expand tabs to spaces.
/W : Compress white space (tabs and spaces) for comparison.
To compare sets of files, use wildcards in pathname1 and pathname2 parameters.
To identify 2 identical files use this syntax:
FC file1.txt file2.txt | FIND "FC: no dif" > nul
IF ERRORLEVEL 1 goto :s_files_are_different
If two files are compared and the four lines of text match as follows
Specifying /nnnn =2 the file compare will display the 4th line and continue
Specifying /nnnn =3 the file compare will halt at the 4th line (files too different)
Specifying /LB1 the file compare will halt after the first line
FortyPoundHead has posted a total of 1975 articles.
You can find more information from FortyPoundHead by visiting .
No comments on this post yet!
Do you have a thought relating to this post? You can post your comment here. If you have an unrelated question, you can use the Q&A section to ask it.
Or you can drop a note to the administrators if you're not sure where you should post.