zcmp, zdiff − compare compressed files
cmp_options ] file1 [ file2 ]
zdiff [ diff_options ] file1 [ file2 ]
Zcmp and zdiff are used to invoke the cmp or the diff program on compressed files. All options specified are passed directly to cmp or diff. If only 1 file is specified, then the files compared are file1 and an uncompressed file1.Z. If two files are specified, then they are uncompressed (if ending with ".Z") and fed to cmp or diff. The exit status from cmp or diff is preserved.
cmp(1), diff(1), zmore(1), zcat(1), compress(1), uncompress(1)
Messages from the cmp or diff programs refer to temporary filenames instead of those specified.