File::Compare(3perl) Perl Programmers Reference Guide File::Compare(3perl)
NAME
File::Compare - Compare files or filehandles
SYNOPSIS
use File::Compare;
if (compare("file1","file2") == 0) {
print "They're equal\n";
}
DESCRIPTION
The File::Compare::compare function compares the contents of two sources, each of which
can be a file or a file handle. It is exported from File::Compare by default.
File::Compare::cmp is a synonym for File::Compare::compare. It is exported from
File::Compare only by request.
File::Compare::compare_text does a line by line comparison of the two files. It stops as
soon as a difference is detected. compare_text() accepts an optional third argument: This
must be a CODE reference to a line comparison function, which returns 0 when both lines
are considered equal. For example:
compare_text($file1, $file2)
is basically equivalent to
compare_text($file1, $file2, sub {$_[0] ne $_[1]} )
RETURN
File::Compare::compare and its sibling functions return 0 if the files are equal, 1 if the
files are unequal, or -1 if an error was encountered.
AUTHOR
File::Compare was written by Nick Ing-Simmons. Its original documentation was written by
Chip Salzenberg.
perl v5.34.0 2025-07-25 File::Compare(3perl)
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