Linux.com :: How to add metadata to digital pictures from the command line Digital media files are more useful and accessible when tagged with metadata -- that is, descriptive information about each photo that either can be embedded inside images themselves or stored in external databases. ExifTool is an efficient, flexible, and portable way to manage image, audio, and video metadata under Linux. In this article we'll see how to use ExifTool to manage EXIF data inside JPEG files. with accessibleaddmetadatadescriptivedigitalfilesmediaphototagged