Issue
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
The files in the directory are numbered from 1.jpg
to 123.jpg
. The convertion went fine but after converting the pages were all mixed up. I wanted the pdf to have pages from 1.jpg
to 123.jpg
in the same order as they are named. I tried with the following command as well:
cd 1
FILES=$( find . -type f -name "*jpg" | cut -d/ -f 2)
mkdir temp && cd temp
for file in $FILES; do
BASE=$(echo $file | sed 's/.jpg//g');
convert ../$BASE.jpg $BASE.pdf;
done &&
pdftk *pdf cat output ../1.pdf &&
cd ..
rm -rf temp
But still no luck. Operating platform Linux.
Solution
The problem is because your shell is expanding the wildcard in a purely alphabetical order, and because the lengths of the numbers are different, the order will be incorrect:
$ echo *.jpg
1.jpg 10.jpg 100.jpg 101.jpg 102.jpg ...
The solution is to pad the filenames with zeros as required so they're the same length before running your convert command:
$ for i in *.jpg; do num=`expr match "$i" '\([0-9]\+\).*'`;
> padded=`printf "%03d" $num`; mv -v "$i" "${i/$num/$padded}"; done
Now the files will be matched by the wildcard in the correct order, ready for the convert command:
$ echo *.jpg
001.jpg 002.jpg 003.jpg 004.jpg 005.jpg 006.jpg 007.jpg 008.jpg ...
Answered By - Delan Azabani