![]() # if the order of attributes inside the XML tag has changed. #temp file with only those lines from the XML file, that we are NOTE that unfortunately, I am not guaranteed that the XML element(s) are contained in an enclosing tag (this file is generated by. I want to use grep because I need to use this as the condition of an if check in a bash script. There is not perfect way for XML parsing using pure bash commands. For parsing xml xmlstarlet may be useful utility. Nah, that's complete overkill for the task For what I understand we only want to extract title content from xml of known layout, not parse xml. I want to grep for a pattern only in the first element. Then getting the node value will be easy. Under linux you can try xmllint: xmllint -xpath '//violation/text ()' file.xml. What you need is xpath to parse the xml and extract things. sed and grep are available, but Ive had no luck with them- sed finds a match, but outputs the whole stream of xml rather than the single word value I want, and I just plain cant get grep working. Now if we consider that the attribute order inside an XML tag will not change, then extracting the value of a particular attribute can be done using a simple shell script: I have a file with multiple occurrences of an XML element. Any single line break may broke the sed/grep solution. Due to the constraints of the Oracle Linux distro on the server Im using at work, I need to get this working using pure bash if possible. awk using a field separator Double Quote ( " ), since we consider that the attributes in an XML will in the format: attrName="attrValue" grep only those lines which are of interestģ. There are thirty party tools like xml_grep by, however if you want to use the plain vanilla shell script, then there's nothing like the combination of cat, grep, awk and sed to get all you parsing done.Ģ. Under linux you can try xmllint: xmllint -xpath '//violation/text()' file.xml will output: is used1 update, add the xpath to get the attribute: xmllint -xpath 'number(//violation/beginline)' file. But there are situations when we need to get such parsing done via SHELL SCRIPTS. Any single line break may broke the sed/grep solution. Java's JAXB library is pretty useful for getting this done. Using ancestor::* instead of ancestor-or-self::* makes printing the tabs correctly easier, and eliminates the extra test for last element.Many times we need to read a particular attributes value from a XML formatted file. 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 '//*' \
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