ZDIFF(1) BSD Reference Manual ZDIFF(1)
zcmp, zdiff - compare compressed files
zcmp [options] file1 [file2] zdiff [options] file1 [file2]
zcmp and zdiff are filters that invoke cmp(1) or diff(1) respectively to compare compressed files. Such files generally have a "Z" or "gz" exten- sion (both the compress(1) and gzip(1) formats are supported). Any options that are specified are passed to cmp(1) or diff(1). If only file1 is specified, it is compared against a file with the same name, but with the extension removed. When both file1 or file2 are speci- fied, either file may be compressed.
TMPDIR Directory in which to place temporary files. If unset, /tmp is used.
/tmp/zcmp.XXXXXXXXXX Temporary file for zcmp. /tmp/zdiff.XXXXXXXXXX Temporary file for zdiff.
cmp(1), compress(1), diff(1), gzip(1)
zcmp and zdiff rely solely on the file extension to determine what is, or is not, a compressed file. Consequently, the following are not supported as arguments: - directories - device special files - filenames indicating the standard input ('-') MirBSD #10-current June 23, 2003 1