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Find the only string name based on the sub string name in a file.

Command used:

cat test.xml | grep -i current | awk -F / '{print $NF}' | tr -d

What works:

File content:

<Context path="/SomeApi" reloadable="false" docBase="http://some-domain/CURRENT/SomeApi-CURRENT.war"

Output (desired output):

SomeApi-CURRENT.war

What does not work:

File content:

<Context path="/SomeApi" reloadable="false" docBase="http://some-domain/CURRENT/SomeApi-CURRENT.war" workDir="/U01/someApi/work

Output:

work className=URLStandardContext unpackWAR=true>

Need output SomeApi-CURRENT.war

jww
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mayank arora
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    Possible duplicate of [How to parse XML in Bash?](https://stackoverflow.com/q/893585/608639), [How to parse XML using shellscript?](https://stackoverflow.com/q/4680143/608639) and [Simplest way to do basic xml parsing from unix command line](https://stackoverflow.com/q/9200462/608639). I believe you need to use the proper tools to parse the XML first. Then, you can move on to extra parsing of the string. – jww Jun 12 '19 at 14:35

1 Answers1

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It appears, you are interested in the docBase attribute of your xml elements. Specifically those where the value string contains "current" as a substring.

grep -i current test.xml | grep -o " docBase=\"[^\"]*" | rev | cut -d'/' -f1 | rev

But this is a somewhat crude solution. Multiple assumptions have to be made in order to guarantee correctness.

As using grep etc. is not ideal, you would probably want to check xmllint which is a command line tool for parsing xml inputs. With XPath the command could look something like this:

xmllint --xpath "//Context[contains(translate(@docBase,'CENRTU', 'cenrtu'), 'current')]/@docBase" test.xml | rev | cut -d'/' -f1 | cut -c2- | rev
bajah
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