Many thanks. The expression
hostcmd_j_ =: [: 2!:0 '(' , ,&' || true)'
solves the problem I had with just 2!:0. But is there an explination
why an exprssion of the form 2!:0 'foo.exe <infile >outfile' should
work on some machines and fail on others, when both are running the
same version of J? I'm afraid my grasp of unix scripting is too poor
to understand just what hostcmd_j_ does.
Patrick
On Sat, 25 Nov 2017, Joey K Tuttle wrote:
Chris,
Thanks for the credit - and I'm glad to see that hostcmd_j_ is commonly
available.
But, to be fair, I plagiarized the definition from Martin Neitzel more than 23
years ago...
My servers invoke it many thousands of times a day in various monitoring scripts - and I use it often in CLI sessions as well.
I like the fact that it always returns a result (as well as echoing stderr
output to my CLI session), which desire is what Martin responded to all those
years ago.
- joey
On 2017Nov 25, at 12:14, chris burke <[email protected]> wrote:
hostcmd_j_ is Joey's cover for 2!:0, e.g. see
www.jsoftware.com/pipermail/programming/2017-April/047204.html
On Sat, Nov 25, 2017 at 12:06 PM, J. Patrick Harrington <[email protected]>
wrote:
Sorry, I meant "returning with no screen output'
I am now running the full program with hostcmd_j_ for 2!:0.
It's chugging away, hasn't failed yet. :-)
On Sat, 25 Nov 2017, J. Patrick Harrington wrote:
Chris,
That test works. I just tried
hostcmd_j_ '../synmod.exe < fort.5 >fort.6'
and that works as well, returning with screen output, and writing
successfully to fort.6. So hostcmd_j_ ~: 2!:0
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