Search tags for words and add to keywords

[magarlick]

Dear all

Is there any way to search specific tags (e.g. TransmissionReference or OriginalTransmissionReference or Instructions) for a certain word and, if the word is found in a given file, append it to the keywords for that file?

Linux Mint, latest exiftool.

Thanks.

[StarGeek]

Do you need to extract a specific word from the tag or just add the full tag value to the keyword?

In the latter case, the command would be something like
exiftool -if "$TransmissionReference=~/word/i" "-Subject+<TransmissionReference" /path/to/files/

[magarlick]

Thank you, that's helpful. It would be good to only extract part of the word from the tag. 'If the tag TransmissionReference contains Cambridge University Press, add Cambridge to the keywords'.

[Phil Harvey]

It would be good to only extract part of the word from the tag. 'If the tag TransmissionReference contains Cambridge University Press, add Cambridge to the keywords'.

exiftool -if "$TransmissionReference=~/Cambridge University Press/" "-Subject+=Cambridge" DIR

- Phil

[StarGeek]

Dang it.  I typed the exact same thing, but I guess I got distracted and never actually hit Post.