bash code to recursively remove EXIF info

leosgb · 10-24-2007, 01:06 AM

Hi,

I am trying to write a small program to automate my EXIF extraction and rotation for my images. My images are organized as:

year/month/date

And I would like to be able to call this script from any level in the tree. The idea is to call jhead everywhere to rotate and then to remove the EXIF info before proceeding to the next level.

My current program only goes one level in the tree. And I still dont understand why it doenst work. Can anyone tell me what I need to do to go from year and get to all my months, day by day? This script can go from the month and modify each day but that is all.

Here it goes:

Code:

#!/bin/bash

olddir=$PWD

processDir(){


        cd "$olddir/$1"
        echo "I am in $1"
        ls
        jhead -autorot -purejpg -exonly *.JPG

}

for dir in */
do
        echo "Dir is $dir"
        processDir "$1/$dir"
done

cd "$olddir"

Thank you for any suggestions.

--EDITED---
Actually, After I posted this I saw that my program simply doesnt recurse. So, now, all I need to do is to figure out how to add the processDir call in the processDir function to do what I want.

zulfilee · 10-24-2007, 01:58 AM

You dont need a recursive function to do that.
just find the list list of all jpeg files and use the command on the list.

#!/bin/bash
FILE_LIST=`find . -iname "*.jpg"`
for EACH_FILE in $FILE_LIST
do
echo "The file is $EACH_FILE ...... "
<Your command for that file>
done

That should do.

blackhole54 · 10-24-2007, 02:01 AM

While you could probably do it recursively, you would have to be careful. I think it would be easier to let the find command descend the directories for you:

Code:

#!/bin/bash

flag=callmyself

if [ "$1" == $flag ]; then
	shift
        cd "$1"
        echo -n "I am in"
	pwd
        ls
        jhead -autorot -purejpg -exonly *.JPG
else
        find "$1" -type d -exec $0 $flag {} \;
fi

This script calls itself once for each subdirectory find finds. Since the outer level script never changes directory, you don't need to save your original directory. If you want to work your subdirectories from the "bottom up" instead of the "top down" you can add the -depth option to the find command.

I think you could also do what you are trying to do with the single command:

Code:

#!/bin/bash

find "$1" -name "*.JPG" -exec jhead -autorot -purejpg -exonly {} \;

(The space before the "\;" at the end of the find command is necessary.)

leosgb · 10-24-2007, 10:51 AM

Thanks guys. I will try this when I am at home. I think the find solution is the best. I dont need to do anything fancy. I just want it to work and to be clean.

leosgb · 10-25-2007, 12:31 AM

Nice! It works perfectly! I will never had to rotate all those millions of pictures manually again!