Linux shell script for calling Java program with arguments

Question

I have a java program that runs as a service in linux box. I have shell script file that has the following line to start the program.

$EXEC -home "$JAVA_HOME" -cp "$CLASS_PATH" -outfile "$LOG_OUT" -errfile "$LOG_ERR" -pidfile "$PID" 1ドル $CLASS 
$CLASS_PATH has class path
$CLASS has the name of main class
EXEC="/usr/bin/jsvc"

I can start and stop the service using following commands

• service myscriptfilename start

• service myscriptfilename stop

Now I added a new argument to my program called "myflag" . It works fine on windows box . Now I am having difficulty passing the new argument to my program on my linux box using the shell script.

Now I am starting my service as

• service myscriptfilename start myflag

I can get the value of myflag using 2ドル in shell script. I am trying to figure out how do I pass that to my program

How can i pass my "myflag" to my program from shell script in the following line?

$EXEC -home "$JAVA_HOME" -cp "$CLASS_PATH" -outfile "$LOG_OUT" -errfile "$LOG_ERR" -pidfile "$PID" 1ドル $CLASS

• user3707125: Are you asking this?
• Kenner Dev: I can get the value of myflag using 2ドル in shell scriipt . I am trying to figure out how do I pass that to my program?
• 4ae1e1: Who knows how your program parses command line arguments. There's no agreed standard, so there could be a million ways. It's your program after all, and you should know better than us... (You didn't even say what's $EXEC, for that matter; maybe it's known to all Java programmers? I'm not sure.)
• Kenner Dev: I am looking for args[0].It is working fine in windows box . I am not sure where to pass that argument in linux

Answer 1

I am considering that $EXEC is java executable, 1ドル is your JAR, $CLASS is your main class. In this case just append ${@:2} to the end of the line:

$EXEC -home "$JAVA_HOME" -cp "$CLASS_PATH" -outfile "$LOG_OUT" -errfile "$LOG_ERR" -pidfile "$PID" 1ドル $CLASS ${@:2}

• Kenner Dev: EXEC="/usr/bin/jsvc" and 1ドル=start from the command service myscriptfilename start myflag
• user3707125: Should work nevertheless - it has similar execution options.
• user3707125: @KennerDev, can you investigate which part doesn't work? Have you tried replacing ${@:2} with myflag? There are two places where your parameter may not be passed: service start and jsvc .... Try to determine which of these doesn't work.
• Kenner Dev: It is at jsvc level .It is passing at service start.
• user3707125: @KennerDev, are you retrieving them through DaemonContext ?