Improve the RTOFS gempak scripts (#1590)

[DanIredell-NOAA]

http://www2.spa.ncep.noaa.gov/bugzilla/show_bug.cgi?id=1590

At next upgrade, please investigate to improve the RTOFS gempak scripts with the followings -

In scripts/exrtofs_glo_gempak.sh - update as below to make gempak job logfile more readable -

• 51 echo "./gempak.sh $last $stepnum $instr $outstr $COMOUTgempak > $instr.$stepnum.log 2>&1" >> mpirun.dat

In the gempak/gempak.sh -

• add “export err=$?; err_chk” after “ $WGRIB2 ../rtofs_glo.t00z.f0${last}_${instr}_std.grb2….” to fail the job when there is issue with wgrib2 input data file

• add “export PS4='${last}-${stepnum}-${instr}: $SECONDS + ' ” for job logfile to be more readable and easy to troubleshoot for any issue.

Sample of job logfile with above suggested updates /lfs/h1/ops/test/output/20240808/rtofs_global_gempak_alaska.o171489150 on Dogwood -
....
24-11-alaska: 10 + '[' -s grtofs_alaska_2024072300f011 ']'
24-11-alaska: 10 + cpfs grtofs_alaska_2024072300f011 /lfs/h1/ops/test/com/rtofs/v2.4/rtofs.20240723/gempak
24-12-alaska: 10 + echo
24-12-alaska: 10 + '[' -s grtofs_alaska_2024072300f012 ']'
24-12-alaska: 10 + cpfs grtofs_alaska_2024072300f012 /lfs/h1/ops/test/com/rtofs/v2.4/rtofs.20240723/gempak
24-09-alaska: 10 + '[' -s grtofs_alaska_2024072300f009 ']'
24-09-alaska: 10 + cpfs grtofs_alaska_2024072300f009 /lfs/h1/ops/test/com/rtofs/v2.4/rtofs.20240723/gempak
24-01-alaska: 10 + echo
24-01-alaska: 10 + '[' -s grtofs_alaska_2024072300f001 ']'
24-01-alaska: 10 + cpfs grtofs_alaska_2024072300f001 /lfs/h1/ops/test/com/rtofs/v2.4/rtofs.20240723/gempak
24-07-alaska: 10 + echo
24-07-alaska: 10 + '[' -s grtofs_alaska_2024072300f007 ']'
24-07-alaska: 10 + cpfs grtofs_alaska_2024072300f007 /lfs/h1/ops/test/com/rtofs/v2.4/rtofs.20240723/gempak
24-08-alaska: 10 + echo
24-08-alaska: 10 + '[' -s grtofs_alaska_2024072300f008 ']'
24-08-alaska: 10 + cpfs grtofs_alaska_2024072300f008 /lfs/h1/ops/test/com/rtofs/v2.4/rtofs.20240723/gempak
24-10-alaska: 10 + echo
24-10-alaska: 10 + '[' -s grtofs_alaska_2024072300f010 ']'
24-10-alaska: 10 + cpfs grtofs_alaska_2024072300f010 /lfs/h1/ops/test/com/rtofs/v2.4/rtofs.20240723/gempak
24-05-alaska: 10 + echo
24-05-alaska: 10 + '[' -s grtofs_alaska_2024072300f005 ']'
24-05-alaska: 10 + cpfs grtofs_alaska_2024072300f005 /lfs/h1/ops/test/com/rtofs/v2.4/rtofs.20240723/gempak
....

[DanIredell-NOAA]

Added echo statement to scritps/exrtofs_glo_gempak.sh.
Added export statement to gempak/gempak.sh.