conv.sh

#!/bin/bash

for num in $(seq 2 2 9)
do
  num_incr=$(( num + 1 ))
  echo "0000${num}.jpeg"
  echo "0000${num_incr}.jpeg"
  convert +append "0000${num}.jpeg" "0000${num_incr}.jpeg" "${num}.jpeg"
  echo "converted to ${num}.jpeg"
done

for num in $(seq 10 2 99)
do
  num_incr=$(( num + 1 ))
  echo "000${num}.jpeg"
  echo "000${num_incr}.jpeg"
  convert +append "000${num}.jpeg" "000${num_incr}.jpeg" "${num}.jpeg"
  echo "converted to ${num}.jpeg"
done

for num in $(seq 100 2 335)
do
  num_incr=$(( num + 1 ))
  echo "00${num}.jpeg"
  echo "00${num_incr}.jpeg"
  convert +append "00${num}.jpeg" "00${num_incr}.jpeg" "${num}.jpeg"
  echo "converted to ${num}.jpeg"
done