sarkasper sarkasper - 1 month ago 27
Linux Question

xml_grep get attribute from element

Is it possible (and if so, how) with xml_grep to get the value of a specific attribute from a specific element? I only seem to be able to output the information between tags.

example:

<eid>
<identity nationalnumber="13021912354" dateofbirth="20130219" gender="male">
<name>Menten</name>
<firstname>Kasper</firstname>
<middlenames>Marie J</middlenames>
<nationality>Belg</nationality>
<placeofbirth>Sint-Truiden</placeofbirth>
<photo>base64-string</photo>
</identity>
</eid>


output the value (in this case: 13021912354) of the 'nationalnumber'-attribute from the 'identity'-element

Answer

With xmllint :

xmllint --xpath 'string(//identity/@nationalnumber)' file.xml

For debian distro (or derivatives) xmllint is part of the libxml2-utils package and can be installed so:

apt-get install libxml2-utils