Mail Archives: opendos/1997/11/30/15:56:53
X-Comment-To: Matthias Paul
Hi!
30-ξΟΡ-97 19:54 MPaul AT calderauk DOT com (Matthias Paul) wrote to opendos AT delorie DOT com, opendos-support AT delorie DOT com:
> On 97-11-30, Arkady V.Belousov replied:
> >> 0 - usual run, even if target file not found, or files have different size
> >> OS/2 COMP returns the following errorlevel:
> >> 5 - files were not equal
> >> I have not tested the MS-DOS errorlevels.
> >> Of course, OpenDOS should at least report errorlevel 5 if file are not equal...
> > Where you see errorlevel 5 above? Look:
> >[batchjob deleted]
> > Try "cmp file1 file2", where files differs by size or by contents and
> >watch result (superfluous questions and always "compare ok."). :(
> Yes, that s what I meant, too.
No. You assume compatability between "comp" from OS/2 and from OpenDOS,
although this contrary docs and practice.
> I was just reporting the status quo. ;-)
> The returned errorlevels are not very helpful for batchjob programming,
> but this could be because of MS-DOS compatiblity (again, I have NOT
> verified the errorlevels with MS-DOS).
No. I mean not troubles with manipulating "errorlevel" (this is not
troubles _for me_). I point: "comp" from OD (also as from MS-/PC-DOS) quite
not report presence of differences through errorlevel, so _you_ (also) can't
check this in batches.
If I right understand, you not understand me - may be because you
forget: "if errorlevel <n>" check return code for equal _or greater_ than
<n>, so
if errorlevel 1 echo greater 0
if errorlevel 5 echo greater 4
both call echo when errorlevel are 5.
[...skip for example of innovation (%errorlevel%) in OD's command.com...]
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