Search string in file via bash but only work match

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

Answer

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