Bash grep get xml element values2/28/2024 ![]() Given a valid XPath expression, the result of this command will be exactly what is required - a value to assign to the sensor. The first, -xpath, contains an XPath expression for waht to select, and the trailing dash ( -) prompts xmllint to accept XML from STDIN (the pipe from curl). And yes I know bash/sed may not be the best way to do this, but I am limited to packages/tools present by default on SUSE Linux Enterprise Server 11. The second part of this command is the pipe to xmllint. As a side note, the name tag containing value SPRINT is guaranteed to occur only once in entire XML. Basically, my script should print out the properties of element XML files, and make a summary. Using ancestor::* instead of ancestor-or-self::* makes printing the tabs correctly easier, and eliminates the extra test for last element.Data Publisher T08:45:00 11.8 T09:00:00 11.8 T09:15:00 11.8 The output I get: $ xmlstarlet sel -T -t -m '//*' -i -m 'ancestor-or-self::*' -i '(position()=last())' -o '-> ' -v -b -o $'\t' -b -n foo.xmlĪfter thinking a bit, the following is simpler: xmlstarlet sel -T -t -m '//*' \ print only for elements which have the display attribute, so -i have indented the command above to make the flow clearer.$'\t' in bash will get you a tab character. it's not valid XML Bravo at 23:42 Bravo Note that the only thing missing from the file to make it well-formed XMl is an arbitrarily named start-tag at the start and its corresponding end-tag at the end. Extracting values from XML on bash The first method uses command line args:(available in all modern distros) The second method uses xmllint shell and stdin(. I can agree, if you really want to parse xml/html you should use a tool like xpath as described in this post: bash XHTML parsing using xpath Alternative way of solving your problem: I had a look on the code youve posted and the source code of. print tabs to indent (we can do it after every element, it will just leave trailing, invisible tab), so just -o $'\t'. at 23:30 2 One issue you may have using XML tools to process that file is.Knowing little about XML, I'm overwhelmed with the tool, and likely need only a very tiny part of it. for all but the last element, so it's easy to invert that. I need to extract a few values from an XML file, and I stumbled onto XMLStarlet that seems pretty powerful. To find the information I need, I run: grep -oP '' temp.
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