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Top Forums UNIX for Dummies Questions & Answers opposite return status in c shell Post 302487866 by phil518 on Thursday 13th of January 2011 11:06:32 PM
Old 01-14-2011
Thank you very much for the answers. It makes sense now.

But, does it mean "0" is considered "true" as the return status, but is "false" as a value?

for example:
Code:
set tmp=0;  if ( $tmp ) echo t

will not echo t.

Thanks.

Moderator's Comments:
Mod Comment Please use code tags when posting data and code samples!

Last edited by Franklin52; 01-14-2011 at 05:44 AM..
 

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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)
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