脚本多次执行

Question

我有一个脚本可以启动、终止或重新启动多个 java 程序。但是，当我执行它时，它最终会在后台运行多次。

这是我的脚本：

#!/bin/bash

export jvmArgs="-jar -Xms1024m -Xmx2048m -Djava.security.egd=file:/dev/../dev/urandom"

function killer () {
    app=$1
     kill -9 $(ps -ef | grep  ${app} | grep -v grep | awk '{print $2}');

}


function start_acolds ()
{
    basePath=/path/to/apps/
     cd ${basePath}
     cd ${basePath}app0 && nohup java ${jvmArgs} app0.jar >/dev/null 2>&1&
     cd ${basePath}app1 && nohup java ${jvmArgs} app1.jar >/dev/null 2>&1&
     cd ${basePath}app2 && nohup java ${jvmArgs} app2.jar >/dev/null 2>&1&
     cd ${basePath}app3 && nohup java ${jvmArgs} app3.jar >/dev/null 2>&1&
     cd ${basePath}app4 && nohup java ${jvmArgs} app4.jar >/dev/null 2>&1&
     cd ${basePath}app5 && nohup java ${jvmArgs} app5.jar >/dev/null 2>&1&
     cd ${basePath}app6 && nohup java ${jvmArgs} app6.jar >/dev/null 2>&1&
     cd ${basePath}app7 && nohup java ${jvmArgs} app7.jar >/dev/null 2>&1&
     cd ${basePath}app8 && nohup java ${jvmArgs} app8.jar >/dev/null 2>&1&

}
function kill_acolds(){
    killer  app0.jar
    killer  app1.jar
    killer  app2.jar
    killer  app3.jar
    killer  app4.jar
    killer  app5.jar
    killer  app6.jar
    killer  app7.jar
    killer  app8.jar
}
case "$1" in
start)
echo "Iniciando servicios... "
start_acolds
;;
stop)
echo "Deteniendo servicios..."
kill_acolds
;;
restart)
kill_acolds
start_acolds
;;
*)
echo "Modo de empleo: $0 {start|stop|restart}"
exit 1
;;
esac
exit 0

当我执行它时，它会完成它的工作，并启动\杀死所有程序，但后来我在以下输出中看到了这一点ps：

user1@UbuntuMachine:/$ ps -ef|grep -v grep|grep acoldp.sh.dc
user1 12241     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12242     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12243     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12244     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12245     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12246     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12247     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12248     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12249     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12252     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12253     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12254     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12257     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart
user1 12258     1  0 11:24 pts/1    00:00:00 /bin/bash ./acoldp.sh.dc restart

那么，为什么会陷入这样的困境呢？我的意思是，它完成了它的工作，但它让我在后台处理所有这些事情。