Bashscripts.org

#!/bin/bash
tmp_file="/tmp/file.$$"
file="$1"
attachment="k02TT.inp"
output="input_ready.inp"

# Just a quickie function to get chunks of text from a file between 2 search parameters
function create_array {
   input=$1
   SOP=$2
   EOP=$3
   x=0
   y=0
   lines=$(cat $input | wc -l)
   while [ true ]; do
      [ $y -lt $lines ] || break
      string=$(head -n$y $input | tail -n1)
      echo "$string" | grep "$SOP" &> /dev/null
      if [ $? -eq 0 ]; then
         retval=true
         let y=y+1
         continue
      fi
      echo "$string" | grep "$EOP" &> /dev/null
      if [ $? -eq 0 ]; then
         retval=false
         break
      fi
      if $retval; then
         array[$x]=$string
         let x=x+1
      fi
      let y=y+1
   done
}

# Function to print out all that is in an array
function print_array {
   output_file=$1
   for i in $(seq 0 ${#array[*]}); do
      echo ${array[$i]} >> $output_file
   done
   unset array
}

# Just to check if all the files are present or not :)
if [ -f $output ]; then
   echo "Output file already exists";
   exit 1
fi
if [ ! -f $file ]; then
   echo "Input file does not exist";
   exit 1
fi
if [ ! -f $attachment ]; then
   echo -e "Attachment file does not exist. No data will be written at the end of the file.\n This is just a warning."
fi
echo -n "Processing $file ... ";

# Create an array containing everything in between "*NODE" and "** The element type is".
# You need to escape characters that can be interpreted by grep as regular expressions.
create_array $file "\*NODE" "\*\* The element type is"
# Print array to a temporary file
print_array $tmp_file
# Store the sorted values in a variable for safekeeping
sorted=$(cat $tmp_file | sort -k 2 -r)
# Remove the tmp file :)
rm $tmp_file

# Start formatting the output to the output file (defined at the top in variable "output")
echo -e "*NODE
$sorted
** The element type is T3_3. The type provided for ABAQUS is only a guess
** and may have to be modified by the user to be meaningful.
ELEMENT, TYPE=DC2D3" >> $output

# Create a new array with all the data contained in between "*ELEMENT" and "*SOLID SECTION"
create_array $file "\*ELEMENT" "\*SOLID SECTION"
# Print this directly to the output file, as described in your post there wasn't any sorting to be done
print_array $output
echo -e "*SOLID SECTION, ELSET=W, MATERIAL=W
*Nset, nset=PF, instance=PART-1-1, generate
1, <max-node>, 1
*MATERIAL, NAME=C
** Use the information in the header to complete these fields under MATERIAL
*MATERIAL, NAME=W
** Use the information in the header to complete these fields under MATERIAL" >> $output

# The attachment file is defined at the top in the variable attachment. This is the k02TT.inp file mentioned
cat $attachment >> $output

echo "DONE"