You can try executing the cmd in bash shell to verify whether it actually work on the other machine.
Also check the cwd in J session to see it is correct. On Nov 23, 2017 12:54 AM, "J. Patrick Harrington" <[email protected]> wrote: > A problem has surfaced which has me puzzled. I have written a > program which needs the results of another program, synmod.exe, which > reads in a file, executes for a few seconds, and writes the results > to the file fort.6 (synmod.exe is my modification of a 10,000 line > fortran program). The relevant part of my program is as follows: > > LAM=: IX=: QX=: <'' > 1!:44 '/home/tages/tlusty205/synspec/jph' > 'Ti gi lam1 lam2'=. y > fix55 lam1, lam2 NB. put lam1 & lam2 into fort.55 > lngg=. 10^. gi > nh=. -:#Ti > i=. _1 > while. (i=. >:i)<nh do. > Tii=. i{Ti > lngi=. i{lngg > Kbicub Tii, lngi > 2!:0 '../synmod.exe < fort.5 > fort.6' > Z=. lam2 CLEAN Extract'' > 'mu rad deg lam Flx Ia Qa pol'=. Z > LAM=: LAM, <lam > IX=: IX, <Ia > QX=: QX, <Qa > end. > 1!:44 '/home/tages/J6/SPIN.d' > > The issue here is the Foreign 2!:0. This code works *perfectly* on my Dell > laptop running > JVERSION > Engine: j806/j64/linux > Release: commercial/2017-11-06T09:54:01 > Library: 8.06.09 > Qt IDE: 1.6.2/5.3.2 > Platform: Linux 64 > Installer: J806 install > InstallPath: /home/tages/j64-806 > > But... the very same code running on either of the other two machines I > use fails. The line 2!:0 '../synmod.exe < fort.5 > fort.6' > should write the results of synmod to the file fort.6, but > instead defines fort.6 but writes nothing to it. Thus the > Extract'' routine fails when it tries to read fort.6. > > I suspect that while 2!:0 waits for synmod.exe to finish, maybe > on my other machines it transfers to the next line of the J code > before fort.6 is written. One of these machines is a Mac Mini running > JVERSION > Engine: j806/j64nonavx/darwin > Release: commercial/2017-11-06T10:18:00 > Library: 8.06.09 > Qt IDE: 1.6.2s/5.6.3 > Platform: Darwin 64 > Installer: J806 install > InstallPath: /users/jph/j64-806 > > So I'm asking if the foreign 2!:0 in some cases returns without > waiting. I thought just 2!:1 did that. > > Apologies for the long-winded post, Patrick > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
