11-01-2009
Quote:
Originally Posted by
steadyonabix
Ah I get it, sorry I missed you were trying to diff the contents of the directories.
I have not seen the <(..) syntax before, is this peculiar to 93? I use 88 at work so would like to know if this works on that version.
It is called process substitution. I took a look at the man pages. Apparently it is a feature of ksh88 too. However, the man pages say:
Quote:
This feature is only available on versions of the UNIX operating system that support the /dev/fd directory for naming open files.
So might the reason that it is not working on those AIX systems be that /dev/fd is missing?
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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 file1 is specified, it is compared to the uncompressed contents of file1.gz. If two files are specified, their con-
tents (uncompressed if necessary) are fed to cmp or diff. The input files are not modified. The exit status from cmp or diff is pre-
served.
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 may refer to file names such as "-" instead of to the file names specified.
ZDIFF(1)