두 번째 부분만 실행하도록 이 스크립트를 편집하려면 어떻게 해야 합니까?

저는 Linux를 처음 접했고, 2부만 실행되도록(1부는 제외) 다음 스크립트를 조정하려고 합니다.

fail () { 
 echo Execution aborted. 
 read -n1 -r -p "Press any key to continue..." key 
 exit 1 
}

# "name" and "dirout" are named according to the testcase

export name=case
export dirout=${name}_out
export diroutdata=${dirout}/data

# "executables" are renamed and called from their directory

export dirbin=$HOME/DualSPHysics/bin/linux
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${dirbin}
export gencase="${dirbin}/GenCase_linux64"
export dualsphysicscpu="${dirbin}/DualSPHysics5.0CPU_linux64"
export dualsphysicsgpu="${dirbin}/DualSPHysics5.0_linux64"
export boundaryvtk="${dirbin}/BoundaryVTK_linux64"
export partvtk="${dirbin}/PartVTK_linux64"
export partvtkout="${dirbin}/PartVTKOut_linux64"
export measuretool="${dirbin}/MeasureTool_linux64"
export computeforces="${dirbin}/ComputeForces_linux64"
export isosurface="${dirbin}/IsoSurface_linux64"
export flowtool="${dirbin}/FlowTool_linux64"
export floatinginfo="${dirbin}/FloatingInfo_linux64"

option=-1
 if [ -e $dirout ]; then
 while [ "$option" != 1 -a "$option" != 2 -a "$option" != 3 ] 
 do 

    echo -e "The folder "${dirout}" already exists. Choose an option.
  [1]- Delete it and continue.
  [2]- Execute post-processing.
  [3]- Abort and exit.
"
 read -n 1 option 
 done 
  else 
   option=1 
fi 


# PART 1
if [ $option -eq 1 ]; then
# "dirout" to store results is removed if it already exists
if [ -e ${dirout} ]; then rm -r ${dirout}; fi

# CODES are executed according the selected parameters of execution in this testcase

${gencase} ${name}_Def ${dirout}/${name} -save:all
if [ $? -ne 0 ] ; then fail; fi

${dualsphysicsgpu} -gpu ${dirout}/${name} ${dirout} -dirdataout data -svres
if [ $? -ne 0 ] ; then fail; fi

fi


# PART 2 
if [ $option -eq 2 -o $option -eq 1 ]; then
export dirout2=${dirout}/particles
${partvtk} -dirin ${diroutdata} -savevtk ${dirout2}/PartFluid -onlytype:-all,fluid -vars:+idp,+vel,+rhop,+press,+vor
if [ $? -ne 0 ] ; then fail; fi

${partvtk} -dirin ${diroutdata} -savevtk ${dirout2}/PartSquare -onlytype:-all,moving
if [ $? -ne 0 ] ; then fail; fi

${partvtkout} -dirin ${diroutdata} -savevtk ${dirout2}/PartFluidOut -SaveResume ${dirout2}/_ResumeFluidOut
if [ $? -ne 0 ] ; then fail; fi


export dirout2=${dirout}/MeasureElevation
${measuretool} -dirin ${diroutdata} -filexml ${dirout}/case.xml -savecsv ${dirout2}/MeasureSWL -points /scratch/gpfs/hse/DualSPHysics/IASS/points.txt -vars:-all -height
if [ $? -ne 0 ] ; then fail; fi


fi
if [ $option != 3 ];then
 echo All done
 else
 echo Execution aborted
fi

read -n1 -r -p "Press any key to continue..." key

파트 2를 선택하지 않고도 자동으로 실행할 수 있나요?

slurm을 통해 스크립트를 실행했지만 실행 방법을 볼 수 없거나 옵션을 선택할 수 없어서 파트 2가 자동으로 실행되기를 원합니다.