FreeBSD 7.0 manual page repository

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zcmp, zdiff - compare compressed files

 

NAME

      zcmp, zdiff - compare compressed files
 

SYNOPSIS

      zcmp [options] file [file2]
      zdiff [options] file [file2]
 

DESCRIPTION

      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 spec‐
      ified, either file may be compressed.
 

ENVIRONMENT

      TMPDIR  Directory in which to place temporary files.  If unset, /tmp is
              used.
 

FILES

      /tmp/zcmp.XXXXXXXXXX   Temporary file for zcmp.
      /tmp/zdiff.XXXXXXXXXX  Temporary file for zdiff.
      cmp(1), compress(1), diff(1)
 

CAVEATS

      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 (“-”)
 

Sections

Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.