regex - BASH script to rename XML file to an attribute value -

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i have a lot of .xml files structured same way:

<parent id="idvalue" attr1="val1" attr2="val2" ...>     <child attr3="val3" attr4="val4" ... />     <child attr3="val5" attr4="val6" ... />     ... </parent>

each file has 1 <parent> element 1 id attribute.

all of files (almost 1,700,000 of them) named part.xxxxx xxxxx random number.

i want name each of files idvalue.xml, according sole id attribute file's content.

i believe doing bash script fastest , automated way. if there other suggestions, love hear them.

my main problem not able (don't know how) idvalue in specific file, use mv file.xxxxx idvalue.xml command.

first iterate through xml files using find:

find -maxdepth 1 -name 'part*.xml' -exec ./rename_xml.sh {} \;

the line above execute rename_xml.sh every xml file, passing file name command argument script.

rename_xml.sh should this:

#!/bin/bash  // id using xpath. might need  // install xmllint if not present. // xpath query return string (try it!): // //     id="idvalue" // // using sed extract value  id=$(xmllint --xpath '//parent/@id' "$1" | sed -r 's/[^"]+"([^"]+).*/\1/') mv -v "$1" "$id.xml"

don't forget to

chmod +x rename_xml.sh

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