zcmp and
zdiff are filters that invoke
cmp(1) or
diff(1) respectively to compare compressed files. 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 specified, either file may be compressed.
Extensions handled by
gzip(1):
Extensions handled by
bzip2(1):
Extensions handled by
xz(1):