#!/bin/bash
#
PATH_INITGEN="/tmp/initgen_path.log"
SUM_INITGEN="/tmp/initgen_sum.log"

printf 'lib\nusr/lib\nbin\nsbin\n' > $PATH_INITGEN

  # Starting loop of path directory
  while IFS= read READPATH; do

  ls $READPATH > $SUM_INITGEN

    # Starting ELF loop
    while IFS= read FILENAME; do

    # Checking if the ELF is not a symlink 
    if [[ $(file -b $READPATH/$FILENAME -e soft) == "data" ]]; then

      INITMD5=$(md5sum $READPATH/$FILENAME | cut -c -32)
      FILEMD5=$(md5sum /$READPATH/$FILENAME | cut -c -32)

      # if ELF system does  not match init, update required
      if [[ "$INITMD5" != "$FILEMD5" ]]; then

        # Clean everything after .so (if any)
        FILESTRIP=$(echo $FILENAME | cut -f -2 -d .)

        # Delete previous ELF matching the name
	rm $READPATH/$FILESTRIP*

        cp -P /$READPATH/$FILESTRIP* $READPATH/
        echo "/$READPATH/$FILENAME has been updated"
 
       # If ELF system match with init, nothing to do
       else
	echo "/$READPATH/$FILENAME does not need update"
       fi

     fi

    # End of the ELF loop
    done < $SUM_INITGEN
    rm $SUM_INITGEN

  # End loop of path directory
  done < $PATH_INITGEN
  rm $PATH_INITGEN