ZDIFF(1) BSD General Commands Manual ZDIFF(1)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.
SEE ALSOcmp(1), diff(1), gzip(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 (“-”)
BSD June 23, 2003 BSD