08-05-2009
Quote:
Originally Posted by
karla
one more thing: how can i access the value in 5th column and compare it to the corresponding line, printing the difference, or, warning that this line exists only in one file
(1) For two
similar lines of data, is the 5th column the
only one that can be different ?
(2) What exactly is that difference ?
(a) KB0005_value minus KB204320_value, or
(b) KB204320_value minus KB0005_value, or
(c) absolute difference ?
tyler_durden
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ZDIFF(1) General Commands Manual ZDIFF(1)
NAME
zcmp, zdiff - compare compressed files
SYNOPSIS
zcmp [ cmp_options ] file1 [ file2 ]
zdiff [ diff_options ] file1 [ file2 ]
DESCRIPTION
Zcmp and zdiff are used to invoke the cmp or the diff program on files compressed via gzip. All options specified are passed directly to
cmp or diff. If only one file is specified, then it is compared to a file with the same name without the .gz extension. If two files are
specified, then they are uncompressed if necessary and fed to cmp or diff. The exit status from cmp or diff is preserved.
When both files must be uncompressed before comparison, the second is uncompressed to /tmp. In all other cases, zdiff and zcmp use only a
pipe.
SEE ALSO
cmp(1), diff(1), zmore(1), zgrep(1), znew(1), zforce(1), gzip(1), gzexe(1)
BUGS
Messages from the cmp or diff programs refer to temporary filenames instead of those specified.
ZDIFF(1)