It is also possible to add EXIF data to an image through the command line. exiftool is a command line perl utility for manipulating EXIF data.
Usage Examples
$ exiftool -list Available tags: 3DRenderingType A100DataOffset AAFManufacturerID ACoordOfBottomRightCorner ACoordOfTopRightCorner AEAperture AEBAutoCancel AEBBracketValue AEBSequence AEBSequenceAutoCancel AEBShotCount AEBXv AEExposureTime AEFlags AELButton ... ... ...
Print a (very long) list of EXIF tags that can be read or written using the tool.
$ exiftool filename.jpg ExifTool Version Number : 8.60 File Name : filename.jpg Directory : . File Size : 357 kB File Modification Date/Time : 2013:08:23 23:43:42+08:00 ...
View all the EXIF tags for an image file (in this case, filename.jpg).
$ exiftool -Title="Photo Title" filename.jpg 1 image files updated
Add the title (“Photo Title“) to the image file filename.jpg.
$ exiftool -Description="This is a description of the photo." filename.jpg 1 image files updated
Add the description (“This is a description of the photo.“) to the image file filename.jpg.
$ exiftool -XPKeywords="First Tag;Second Tag" filename.jpg 1 image files updated
Add the tags (“First Tag” and “Second Tag“) to the image file filename.jpg.
$ exiftool -GPSLatitude=13.37 -GPSLatitudeRef=N -GPSLongitude=1.337 -GPSLongitudeRef=E filename.jpg 1 image files updated
Add geolocation information (latitude 13.37 degree north and longitude 1.337 degree east) to the image file filename.jpg.
$ exiftool -Title -Description -XPKeywords -GPSLatitude -GPSLatitudeRef -GPSLongitude -GPSLongitudeRef filename.jpg Title : Photo Title Description : This is a description of the photo. XP Keywords : First Tag;Second Tag GPS Latitude : 13 deg 22' 12.00" N GPS Latitude Ref : North GPS Longitude : 1 deg 20' 13.20" E GPS Longitude Ref : East
View the previously added EXIF information (title, description, tags and geolocation) from the image file filename.jpg.
Note: libimage-exiftool-perl is the package that contains the exiftool utility, and may not be present in a default installation. It can be installed through the package manager.
References
[1] http://linux.die.net/man/1/exiftool
[2] http://www.wikipedia.org/wiki/Exchangeable_image_file_format
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