I am running java -jar xyz.jar command on the linux terminal. I have both system.out.println statements and System.exit statements in the code.
how to capture the system.exit or output to the OS on the linux? do i need to prepare a linux script for this?
This may be off-topic for SO.
You just redirect it:
java -jar xyz.jar > the_file_to_output
If you used System.err output as well as System.out output and wanted to redirect both, it's a tiny bit more complicated because you need to redirect out to the file and then redirect error to out:
java -jar xyz.jar > the_file_to_output 2>&1
The 2>&1 thing is what redirects error (standard stream #2) to out (standard stream #1). Note that the order matters, you have to do that after redirecting out to the file.
Java works as any other command.
If you want standard output (or error output) you can work with usual I/O operators: > 2> >> |
java -jar xyz.jar > output.file
java -jar xyz.jar | sort | less
For getting System.exit value you have special variable $?
java -jar xyz.jar
echo $?
To get more info Exit status and I/O redirection
$? has nothing to do with capturing output. If it's the exit code you wanted, though, that's what you need. (Don't forget to mark an answer correct if it answers your question.)
jar whatever ... > redirect.txt