Running, background running, viewing port, and termination of jar packages under Linux system

jar package running

windows and linux are the samejava -jar

Run when terminal is not closed

java -jar xxx.jar: The current ssh window is locked and no other operations can be performed. Ctrl + c or directly close the window to stop the program; : The
java -jar xxxxx.jar &current ssh window is not locked and other operations can be performed. When the window is closed, the program exits; : The program is suspended
nohup java -jar xxx.jar &in the background. The program stops when the account is logged out or the terminal is closed, and the log file is stored in the nohup.out file in the current directory;

Terminal closes background running

nohup java -jar xxxxxx.jar > log.txt &: Specify the output log to the log.txt file and suspend the program in the background. When the account is logged out or the terminal is closed, the program is still running;

nohupIt means generating a log file nohup.outand &starting a new thread in the background to execute the command.

View the running jar package

The following commands can be used
ps -ef | grep javato view the currently running java process,
ps -ef | grep xxx.jarview the currently running jar process,
ps -efview all processes, and see which columns are PID and PPID.

Termination of jar

kill -9 jar包pid

jar start and stop script

# start.sh
nohup java -jar 包名.jar >log.txt &       
echo $! > /var/run/包名.pid
# 将jar包启动对应的pid写入文件中，为停止时提供pid

# shutdown.sh
PID=$(cat /var/run/包名.pid)
kill -9 $PID

Add executable permissions to the script

sudo chmod +x ./test.sh