I used the following command to convert and merge all the jpg files in a directory to a single pdf file.
convert *.jpg file.pdf
Th
Mixing first idea with their reply, I think this code maybe satisfactory
jpgs2pdf.sh
#!/bin/bash
cd $1
FILES=$( find . -type f -name "*jpg" | cut -d/ -f 2)
mkdir temp > /dev/null
cd temp
for file in $FILES; do
BASE=$(echo $file | sed 's/.jpg//g');
convert ../$BASE.jpg $BASE.pdf;
done &&
pdftk `ls -v *pdf` cat output ../`basename $1`.pdf
cd ..
rm -rf temp