LibreOffice headless service usually down on CentOS, how to keep it running?

I installed LibreOffice headless on my CentOS as document preview for Liferay portal. It listen on port 8100 but it usually disappear and need to restart in again with

#soffice --headless --accept="socket,host=127.0.0.1,port=8100;urp;" --nodefault --nofirststartwizard --nolockcheck --nologo --norestore --invisible &

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Any method to keep in running?
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Sida SayInfrastructure EngineerAsked:
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nociSoftware EngineerCommented:
If used this way it will run until you log out that session.
To keep it running i suggest you make it a service and build this command into  a script that is run during bootup of the system.
It depends on the CentOS version how to do it. CentOS 7  uses systemd, i have no idea how it should be resolved there as i consider systemd infant technology and don't deploy it until it matures a lot.

For previous versions a script like:

---8<---
#!/bin/sh

case $1 in
start)
 nohup /usr/bin/soffice --headless --accept="socket,host=127.0.0.1,port=8100;urp;" --nodefault \
      --nofirststartwizard --nolockcheck --nologo --norestore \
      --invisible &
  ;;
stop)
  ;;
 *)
   echo please use start or stop as parameter.
  ;;
esac
exit 0
---8<---
is a very basic way to start it.
This needs to be activated as service:
Save it as /etc/init.d/soffice-headless

then do:
  chkconfig --add soffice-headless --level 345

more fancy script can be made that auto configure for chkconfig, or have better error handling.
Gerwin Jansen, EE MVETopic Advisor Commented:
Add nohup before your soffice command.

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Sida SayInfrastructure EngineerAuthor Commented:
Thank you all, but I want to know what no hub mean?
Gerwin Jansen, EE MVETopic Advisor Commented:
nohup means 'no hangup' - this means that the  started process will not exit when the terminal or session is exited/killed. If your process generates output on the screen, you should add a redirect to catch that output. At end of your command line add:

>> /path/output.log
Sida SayInfrastructure EngineerAuthor Commented:
Thank @Gerwin Jansen,
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