Bash script for calling Java programs

Question

I have a jar file which I can call the following way: java -jar myjar.jar param1 param2 param3

Now I need a bash script which waits until some clock time is reached (e.g. 5pm) and then calls this jar file several times, lets say 5 times (so that I have 5 JVMs running). Moreover, the arguments passed to the bash script should be passed to the jar. Then, after some times (e.g. 10 minutes), all the started java programs should be killed.

How can I do this?

Thank you very much.

Is it a possibility to register the bash script as a service in Windows, that starts daily at 17:00? Or is that not the kind of behaviour you're looking for? — Ghostkeeper
– Ghostkeeper, Commented Oct 14, 2014 at 20:28
Do you need it to run at 5pm every day? (use cron) Or just today? (use at) — glenn jackman
– glenn jackman, Commented Oct 14, 2014 at 21:17

thom · Accepted Answer · 2014-10-14 21:17:36Z

2

a bash script which waits until some clock time is reached (e.g. 5pm) and then calls this jar file several times, lets say 5 times

UPDATE: Many thanks to Glenn Jackman, I incorporated his answer

#!/bin/bash

cat<<EndBlock | at 5pm
for i in {1..5}; do
    java -jar myjar.jar "$@" &
    pid=$!
    { sleep 600 && kill $pid; } &
done
EndBlock

edited Oct 14, 2014 at 21:17

answered Oct 14, 2014 at 21:04

thom

2,34214 silver badges9 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

sumanta · Accepted Answer · 2014-10-14 20:31:50Z

2

Create a bash script to invoke the method . and add an cron entry to execute at specific time.

answered Oct 14, 2014 at 20:31

sumanta

3593 silver badges7 bronze badges

1 Comment

sumanta Over a year ago

And I think regarding stopping program after 10 minutes should be implemented through java.

glenn jackman · Accepted Answer · 2014-10-14 21:16:46Z

2

A variation on @thom's answer, where an arbitrary number of arguments is passed, and the spawned jvm is killed after 10 minutes.

for i in {1..5}; do
    java -jar myjar.jar "$@" &
    pid=$!
    { sleep 600 && kill $pid; } &
done

answered Oct 14, 2014 at 21:16

glenn jackman

249k42 gold badges233 silver badges362 bronze badges

Collectives™ on Stack Overflow

Bash script for calling Java programs

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related