Check CR2 files for corrupted data

This script assumes that both dcraw and identify (from ImageMagick) are installed and available in your system's PATH.

https://www.dechifro.org/dcraw/

https://imagemagick.org/script/identify.php

If not, you may need to provide the full paths to the executables in the script.

sudo apt-get install dcraw

chmod +x checkCR2.sh

checkCR2.sh /path/to/folder_with_cr2_files/to_check

This script

• creates a list of all subdirectories given the parent directory passed in as argument
• leaves the original files untouched
• checks the CR2 files metadata
• checks the extracted JPEG file from the CR2 file for corruption
• if no file corruption is found in the temporary JPEG file the JPEG file is deleted
• if file corruption is present the affected CR2 file will be copied to a "damaged" folder in the current path, the temporary JPEG file will be deleted and not copied to the "damaged" folder
• checks the JPEG, PNG and GIF files with identify
• if file corruption is present in a JPEG, PNG or GIF file, the affected file will be copied to a "damaged" folder in the current path
• a detailed file report will be generated
• a list of all damaged files will be generated
• if all files are ok all log files and temporary files will be deleted
• all original modification times and creation times of all directories and all subdirectories are stored and restored before the script completes