In a previous post we detailed how to archive data "on-the-fly" from a local source to a remote destination, using the utilities tar, ssh, and cat. Today, we'll add nohup to that pipeline so that it can continue uninterrupted, irrespective of your current connection's status (a broken SSH session, e.g.).
Here goes:
First, preface your pipeline with the nohup command:
nohup tar --gzip --create --verbose --file - foobar | ssh foo@foobarserver "cat > /path/to/foobar/foobar.tgz"
Second, stop the command using the following keyboard combination:
CTRL+Z
Third, place this foreground process into the background with:
bg.
You'll then receive output similar to the following in your shell:
PID 26935: completed
PID 8072: in progress (foobar.tgz).
Pay attention to the latter process ID (PID), as that will be the number you'll reference when checking on the job's status using, e.g.: top -p 8072. For an overview of jobs, and background/foreground processes see this article from Red Hat.
Cheers.