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I am trying to find a way to retrieve some bibliographic data starting from a DOI code using the Linux/MacOS command line.

For example, suppose I want to get the bibtex entry for the following DOI: 10.1016/j.algal.2015.04.001, on this website on this webite I could find the following command which uses the http://dx.doi.org resolver:

curl -LH "Accept: application/x-bibtex" http://dx.doi.org/10.1016/j.algal.2015.04.001

This command gives the bibtex entry as output. I need to retrieve only some of the citation items, e.g. authors list, or the year, or the title and so on. Do you know any technique to this?

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You could retrieve the data in json format and process/filter the data with the jq CLI tool. For example

curl -LH "Accept: application/json" http://dx.doi.org/10.1016/j.algal.2015.04.001 | jq '.title'

will show the title as:

"Microalgae-utilizing biorefinery concept for pulp and paper industry: Converting secondary streams into value-added products"

jq is very powerful, see the tutorial or the manual.

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