reem002.sh

#!/bin/bash

p001(){
  local input1=$1
  local input2=$2
  local output=$3
  local pattern="^\([0-9]\+\)[ ]\+\([A-Za-z]\+\)$"
  declare -A array
  
  for i in `grep -E "^[0-9]+[ ]+[A-Za-z]+$" $input2`
  do
    local k=`echo "$i" | sed -e "s/$pattern/\1/g"`
    local v=`echo "$i" | sed -e "s/$pattern/\2/g"`
    array["$k"]="$v"
  done

  rm -f $output
  cat $input1 | while read line
  do
    local k=`echo "$line" | sed -e "s/^\(r_\)\([0-9]\+\)\(:.\+\)$/\2/g"`
    if [ -n "${array[$k]}" ]; then
      local n=`echo "$line" | sed -e "s/^\(r_\)\([0-9]\+\)\(:.\+\)$/\1${array[$k]}\3/g"`
      echo $n >> $output
    fi
  done
}

p001 test01.txt test02.txt output.txt