zcmp

zcmp [-l] [-s] file1 file2

zcmp compares gzip-compressed files byte-by-byte without requiring manual decompression. It invokes cmp on uncompressed contents and passes all supplied options directly to it.By default, zcmp reports only the first difference found. The -l flag shows all differing byte positions and values. Silent mode (-s) suppresses all output and communicates only through exit codes: 0 if files are identical, 1 if they differ, 2 on error.The command is part of the gzip package and acts as a convenience wrapper. For line-by-line comparison of compressed files, use zdiff instead.

-b, --print-bytes

Print differing bytes (as octal values).

Output byte numbers and differing byte values for all differences.

Suppress all output; communicate result only via exit status.

Skip the first SKIP bytes of each (decompressed) input.

Compare at most LIMIT bytes.

Gzip format. For .gz files. Part of gzip package.

zcmp is part of the gzip package, providing cmp-like functionality for compressed files.

cmp(1), zdiff(1), zcat(1)