SSH - nohup
Introduction
nohup tell the process to ignore the SIGHUP signal
which is sent by ssh session on termination, thus making the command persist
even after session logout. On session logout the command is detched from
controlling terminal and keeps on running in background as daemon process.
Usage
nohup with running task at background was sent to background with prompt
returning immediately giving PID and job ID of the process ([JOBID] PID).
1. run a program to background with nohup:
nohup ping www.ami.com 1>/dev/null 2>&1 &