Tips about image manipulation with Unix command-line tools.

• Tags supported by ImageMagick;
• How to add EXIF tags

In short, ImageMagick can read EXIF and IPTC tags, but only write the latter. EXIF tags can be added using ExifTool.

iptc.txt

2#05#Object Name="Foo"
2#55#Date Created="Bar"
2#80#By-line="Baz"
2#110#Credit="Quux"
2#115#Source="Foo"
2#116#Copyright Notice="FooBar"
2#118#Contact="FooBaz"
2#120#Caption="FooQuux"

$ mogrify -comment "JFIFComment" -profile 8BIMTEXT:iptc.txt IMAGE.JPG
$ exiftool -comment="JFIFComment" -usercomment="EXIF user comment" -artist="artist" -imagedescription="description" -documentname="name" IMAGE.JPG

$ identify -format "%c %[IPTC:2:110] %[EXIF:artist]" IMAGE.JPG

It is easily done with Exiv2:

$ for FILE in *.JPG; exiv 2 mv ${FILE}; done