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Looking at the syntax, it feels like JAVA system

It may be possible to use search and regex.

But I think you can consider writing a class BashHelperConsole. This class refers to the class to which your strVersion belongs, and then Console provides a public method to output strVersion to stdout; your bash can use the java command line to directly call this BashHelperConsole class. , use the return as the variable content, in the form:

strVersion=$( calling_command )

I always do this in my projects, because I output what I want, so it is correct. It just requires the two languages ??to cooperate with each other.

I hope the "one line" you mentioned really looks like that, with nothing more and nothing less.

awk '/public string strVersion = "[0-9]+";/ { d = substr(, 2, length()-3); sub(d, d+1); }; 1'