pell is a simple periodic host monitor that utilizes ping to check for host availability. It can also be used to perform logging functions, with an easy-to-parse output suitable for data extraction and analysis. By default, when a host that you ping’d is alive, it emits a short beep sound. It runs continuously until an INT, TERM, or KILL is received.
To monitor for pongs from foo.bar.baz every second:
$ pell foo.bar.baz
To do the same with audio notifications if the host is up:
$ pell -b foo.bar.baz
To do the same with audio notifications if the host is down:
$ pell -B foo.bar.baz
To monitor for pongs from foo.bar.baz every minute, saving the
output to foo.bar.baz.log run:
$ pell -i 60 foo.bar.baz | tee -a foo.bar.baz.log
To convert foo.bar.baz.log file to CSV, for graphing and data
analysis:
$ sed 's/ /,/g' foo.bar.baz.log > foo.bar.baz.csv
pell exclusively relies on the ping tool. It means that it has the assumption that ICMP Echo Request packets are allowed to reach the remote host. and that the remote host is configured to respond to these packets. Please check the firewall settings.
The file resources/notification.mp3 was recorded by Marianne Gagnon,
with a
CC Attribution 3.0 license,
and was downloaded from
soundbible.com/1682-Robot-Blip.html.