Exec_TDOF

#!/bin/bash

#FILE:  Exec_TDOF
#DATE:  16 SEP 2020
#AUTH:  G. E. Deschaines
#DESC:  Execute ./bin/TDOF.exe with specified namelist file.

function remove_geoc_symlink() {
  if [ -h ./TDOF_geoc.dat ]
  then
    rm -f ./TDOF_geoc.dat
  fi
}

# Check command line parameter
if [ $# -lt 1 ]
then
  echo "usage:  Exec_TDOF name"
  echo "where:  name - name of input namelist .txt file."
  exit -1
fi
name=$1

# Check if TDOF executable exists.
if [ ! -e ./bin/TDOF.exe ]
then
  echo "error:  executable ./bin/TDOF.exe does not exist."
  echo "        Create in ./bin subdirectory with gfortran"
  echo "        as shown in following command expression."
  echo " "
  echo "        gfortran -std=legacy -w -o ./bin/TDOF.exe ./src/TDOF.f"
  exit -2
fi

# Check if input namelist file exists.
ifile="./txt/${name}.txt"
if [ ! -e ${ifile} ]
then
  echo "error:  namelist file ${ifile} does not exist."
  exit -2
fi

# Assemble standard output & geodesy data filenames.

ofile="./out/TDOF_${name}.out"
dfile="./dat/TDOF_geoc_${name}.dat"

# Remove previous symbolic link ./TDOF_geoc.dat (if it 
# exists) and create symbolic link to specified geodesy 
# data file as ./TDOF_geoc.dat.

if [ ! -e ${dfile} ]
then
  touch ${dfile}
fi
remove_geoc_symlink
ln -s ${dfile} ./TDOF_geoc.dat

# Initiate execution of TDOF.
./bin/TDOF.exe <${ifile} >${ofile}

echo "Standard output written to ${ofile}"
echo "Geodesy output data written to ${dfile}"

# Remove symbolic link.
remove_geoc_symlink

exit 0