ZDIFF(1)                FreeBSD General Commands Manual               ZDIFF(1)

NAME
     zdiff -- differential file and directory comparator for compressed files.

SYNOPSIS
     zdiff [-abdilpqTtw] [-I pattern] [-c | -e | -f | -n | -u] [-L label]
           file1 file2
     zdiff [-abdilpqTtw] [-I pattern] [-L label] -C [number] file1 file2
     zdiff [-abdilqtw] [-I pattern] -D string file1 file2
     zdiff [-abdilpqTtw] [-I pattern] [-L label] -U number file1 file2
     zdiff [-abdilNPpqrsTtw] [-I pattern] [-c | -e | -f | -n | -u] [-L label]
           [-S name] [-X file] [-x pattern] dir1 dir2
     zdiff [-v]

DESCRIPTION
     The zdiff utility compares the decompressed contents of gzip file1 and
     file2 and writes to the standard output the list of changes necessary to
     convert one file into the other.  No output is produced if the files are
     identical. See diff(1) for program options.

ENVIRONMENT
     TMPDIR  If the environment variable TMPDIR exists, zdiff will use the
             directory specified by TMPDIR as the temporary directory.

FILES
     /tmp/diff.XXXXXXXX  Temporary file used when comparing a device or the
                         standard input.  Note that the temporary file is
                         unlinked as soon as it is created so it will not show
                         up in a directory listing.

DIAGNOSTICS
     The zdiff utility exits with one of the following values:

           0       No differences were found.
           1       Differences were found.
           >1      An error occurred.

SEE ALSO
     diff(1), cmp(1), diff3(1), sdiff(1), zsdiff(1)

FreeBSD 9.0                     August 15, 2012                    FreeBSD 9.0