funzip decompresses gzip(1) compressed files. By default gzip
crc32 cyclic redundancy checking is disabled. This may speed up decompression by 25% or more over
gunzip(1). Most data corruption errors are still caught even with crc
disabled.
Enable gzip crc32 cyclic redundancy checking for decompress. On some systems this can double
the execution wall time. Most data corruption errors are still caught even with nocrc.