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xmllintでxmlタグの値を取得

Last updated at Posted at 2023-11-18

xmllintでタグの値を取得したい場合、このようにワンライナーで取得できる。

echo 'cat /note/body' | xmllint --shell /home/vpsuser/conf/sample.xml | grep body | sed 's/^.*<body.*>\(.*\)<\/body>.*/\1/'
実行結果
Don't forget me this weekend!

サンプルxmlの内容は下記の通り。(今回はDon't forget me this weekend!を取得)

sample.xml
<?xml version="1.0" encoding="UTF-8"?>
<note>
  <to>Tove</to>
  <from>Jani</from>
  <heading>Reminder</heading>
  <body>Don't forget me this weekend!</body>
</note>

※備考
・このcatは、xmllintの内部コマンドであり、通常のLinuxコマンドのcatとは別物である。
・xmllintの--shell オプションは標準入力からxmllintの内部コマンド(この場合はcat)を読んで実行する。

shellscriptで実行するなら下記

value=`echo 'cat /note/body' | xmllint --shell /home/vpsuser/conf/sample.xml | grep body | sed 's/^.*<body.*>\(.*\)<\/body>.*/\1/'`
echo $value
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