==== How to remove all metadata from an image on Linux  ====

\\
Install the package (on Debian-based)
<code bash>
apt install libimage-exiftool-perl
</code>

We can now remove the metadata
<code bash>
# syntax
exiftool -all=[VALUE] [AFILEORFILES]

# example:
exiftool -all= *.jpg
</code>

This operation also changes file modification time, if you want to recover the modification time of files you can do it with a simple find/sed command
<code bash>
find . -type f -iname '*_original' -exec bash -c 'TGT=$(echo {}|sed "s/_original\$//"); touch -r {} "$TGT"' \;
</code>