I did some tests in my Photos directory tree, and the following system with two shellscripts works for me.
first:
#!/bin/bash
find * -type d -exec second {} \;
echo ""
second:
#!/bin/bash
num=$(ls "$1"/*.jpg 2> /dev/null | wc -l)
if [ $num -ne 0 ]
then
echo -n "."
img2pdf -o "$1/${1//\//-}_${num}_pictures".pdf "$1"/*.jpg
fi
Edit twice: Alternate script second makes a pdf file without number of pictures and 'pictures' in the name:
#!/bin/bash
num=$(ls "$1"/*.jpg 2> /dev/null | wc -l)
if [ $num -ne 0 ]
then
echo -n "."
img2pdf -o "$1/${1##*/}".pdf "$1"/*.jpg
fi
Copy and paste from the code areas into a text editor and create the files first and second
Make them executable
chmod +x first second
move them to a directory in PATH. If this is only for your personal use, [create and] move them in into ~/bin. Otherwise if other users should also use these shellscripts, move them into /usr/local/bin
mkdir ~/bin
mv first second ~/bin
You may need to reboot to get ~/bin into your PATH.
Now you are ready to use them. Change directory to the top or the directory tree, where you have your pictures and run first.
Example (but you have local names, not Pictures like the English),
cd ~/Pictures
first
It will write a dot to the terminal window for each subdirectory where it finds at least one picture and creates a pdf file.
The you can find the pdf files with the following command
find -name "*.pdf"
Major edit:
After a discussion with the original poster, I think I understood the structure of the directory tree to be processed. Copies of the files at lower levels are located in the sub-1 directories with person's names.
The files in these sub-1 directories are to be merged into pdf-files.
Example:
$ tree -U
.
├── adam
│ ├── mkusb-minp-2-crop.jpg
│ ├── us_keyboard_for_sudo_password.jpg
│ ├── nautilus-connect-to-server-2.jpg
│ ├── pict1
│ │ ├── mkusb-minp-2-crop.jpg
│ │ └── nautilus-connect-to-server-2.jpg
│ ├── pict2
│ │ └── us_keyboard_for_sudo_password.jpg
│ └── adam.pdf
└── betty
├── nautilus-connect-to-server-1.jpg
├── mkusb-minp-3-cropx.jpg
├── pict1
│ ├── nautilus-connect-to-server-1.jpg
│ └── calamares-mount-failed.jpg
├── pict2
│ └── mkusb-minp-3-cropx.jpg
├── calamares-mount-failed.jpg
└── betty.pdf
6 directories, 14 files
If you change working directory with cd to where these name-directories are located, you can use the following modified first shellscript.
#!/bin/bash
find -mindepth 1 -maxdepth 1 -type d -exec second {} \;
echo ""
It will run the second shellscript only in the name-directories and not look for what is in [upper or] lower levels of the directory tree.
The following shows how find finds only the name-directories
$ find -mindepth 1 -maxdepth 1
./adam
./betty
