Script to go to every subdirectory of a folder and run command

Question

I am trying to write a script that performs the following steps: 1. Go to every folder in a directory which was given as parameter when running the script. 2. Make a folder in each subdirectory called "Histogram" 3. Read out every file with the Ending *.jpg 4. Convert a picture into a txt-file by the command "Convert XY -format %c histogram:info:XY.txt 5. Move txt-file to folder "Histogram" 6. Go back to start directory and continue with next folder

This is what I got so far:

pfad="${1:-.}"
cd "$pfad/"
mkdir Histogram
for i in 'ls -1 *.jpg'
do
cat $1 |
convert $i -format %c histogram:info:"Histogram_$1'.txt"|
mv "Histogram_$i'.txt" Histogram/

It is still missing, that the script executes the command for each subdirectory, also the making of the folder and the moving of the txt-file in the folder does not work.

Answer 1

create a script which takes a list of absolute file name and creates Histrogram folder if not exists and creates txt file

#!/usr/bin/bash
for absfile in "$@"; do
    dir=${absfile%/*}/Histogram
    file=${absfile##*/}
    mkdir -p "$dir" || exit 1
    convert "$absfile" -format %c histogram:info:"$dir/Histogram_$file.txt" || exit 1
done

call this script in find command

find root_path -name '*.jpg' -exec ./script.sh {} +