beep when a server goes offline
ping -a server-or-ip.com
which would beep when a server IS reachable.
You could also substitute beep with any command, which makes this a powerful alternative to ping -a:
while true; do [ "$(ping -c1W1w1 server-or-ip.com 2>/dev/null | awk '/received/ {print $4}')" = 1 ] && date || echo 'server is down!'; sleep 1; done
which would output the date and time every sec until the ping failed, in which case it would echo.
Notes:
Requires beep package.
May need to run as root (beep uses the system speaker)
Tested on Ubuntu which doesn't have beep out of the box...
sudo apt-get install beep
What do you think?
Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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while true; do ping -c1W1w1 server-or-ip.com 2>/dev/null || { echo Server down; beep; } ; sleep 1; doneAnd another slight edit to do branching:while true; do ping -c1W1w1 google.com &>/dev/null && { echo Up;} || { echo Down; beep; } ; sleep 1; doneRuns one block if the server is up, and another if it's down. Hope this helps!while true; do ping -c1 -W1 google.com &>/dev/null && { say "up";} || { say "down"; } ; sleep 1; doneif the "up" goes on your nerves after sometime you could just take it out.