exiftool.md

Source

https://github.com/exiftool/exiftool

Reverse changes made by exiftool

exiftool -PDF-update:all= <file>

Print metadata of file

exiftool <file>

Add php code inside comment of png file

exiftool -Comment='<phpCode>' <file>.png

Grep for author and producer tags

exiftool * | grep -i "Producer\|Author" | sort -u