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Functions

Set audible alarm when an IP address comes online

Terminal - Set audible alarm when an IP address comes online
ping -i 60 -a IP_address
2009-03-04 06:21:22
User: haivu
Functions: ping
109
Set audible alarm when an IP address comes online

Waiting for your server to finish rebooting? Issue the command above and you will hear a beep when it comes online. The -i 60 flag tells ping to wait for 60 seconds between ping, putting less strain on your system. Vary it to your need. The -a flag tells ping to include an audible bell in the output when a package is received (that is, when your server comes online).

Alternatives

There are 5 alternatives - vote for the best!

Terminal - Alternatives
until ping -c1 ADDRESS;do true;done;zenity --warning --text "ADDRESS is back"
2011-09-26 18:51:38
User: marcusrp
Functions: ping
Tags: Network zenity
6

I'd rather this one on Gnome, as I'm used to be listening some music while working. I've even created a bash function which receives ADDRESS as parameter.

Know a better way?

If you can do better, submit your command here.

What others think

OSX:

ping -i 60 -A IP

Instead of a bell you can have OSX tell you (this one will check every 30 seconds for 5 minutes)

ping -i 30 -c 10 IP && say -v vicki 'Server is back online'
Comment by vaporub 386 weeks and 1 day ago

Pinging your system isn't putting any "strain" on it at all. 'ping -f' that sucker, and the only "strain" you're putting anywhere is your network.

Comment by atoponce 386 weeks ago

@vaporub

that will say 'Server is back online' no matter what, regardless of whether or not the ping actually works, and after all pings are done. You are essentially doing:

sleep 300; say -v vicki 'Server is back online'

albeit with ping working in the mean time.

I think you may have missed the concept.

Comment by sudopeople 386 weeks ago

@sudopeople

No, from the man page:

> If ping does not receive any reply packets at all it will exit with

> code 1. If a packet count and deadline are both specified, and fewer

> than count packets are received by the time the deadline has arrived,

> it will also exit with code 1. On other error it exits with code 2.

> Otherwise it exits with code 0. This makes it possible to use the exit

> code to see if a host is alive or not.

Only problem is it will always wait the whole 5 minutes before telling you.

Comment by porges 386 weeks ago

Remember about "visual bell" (http://www.faqs.org/docs/Linux-mini/Visual-Bell.html). If you use "visual bell" in your xterm, try:

xset b; ping -a IP; xset -b

turn off "visual bell" before ping, and turn it on after ping.

Comment by unixmonkey2039 386 weeks ago

@vaporub: good point, it still misses the mark though. Like you said, it will wait 5 min before telling you if it is up. It would work like this:

sleep 300; ping -c1 IP && say "server is up"

this is a better solution:

while true; do [ "$(ping -c1W1w1 server-or-ip.com | awk '/received/ {print $4}')" = 1 ] && say -v vicky "Server is back online" || echo; sleep 1; done

It would be annoying as hell, but you'd know it was up.

More info: http://www.commandlinefu.com/commands/view/1815/beep-when-a-server-goes-offline

Comment by sudopeople 382 weeks and 1 day ago

The ping command with -o option will exit successfully after receiving one reply packet (at least on Mac OS X):

ping -o $ip && say "Server is back online"

Comment by jh12z 122 weeks ago

2016-6-7 leilei

"Tweed is an excellent fabric especially when you are living in place like London. London is known for its cold weather and in such climate, tweed works absolutely fine. One of the biggest advantages of buying a tweed suit is that you it can be worn all together or can be incorporated separately into pieces in your wardrobe. Tweed suits in London is quite famous amongst men. So let us understand, what exactly tweed fabric is.

What is Tweed?

Tweed is a warm rough to touch fabric and was originated in Scotland. The reason why tweed suits in London are famous is because of its loose weave which makes it flexible and comfortable during winters. The tweed fabric is referred to the weave of fabric; therefore when you see different kinds of tweed, it would tell you the pattern it has been woven. One of the most popular kinds of tweed is the herringbone tweed which a diagonally v-shaped black and white weave. The herringbone tweed gives a rich visual texture and known for its versatility.

Ways to wear Tweed in winters

Everybody needs to wear warm clothes during the winter month to protect from the chilly weather outside. However, many people think that they might have to compromise fashion during those chilly months. Not now! There are many fabrics that you can use to protect yourself from the weather as well as still enjoy great looks. Tweed is one of the fabrics that can make you awesome even in winters as well. Below are some ways of how you can incorporate tweed with other pieces in your wardrobe

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"Casually ? if you are a starter with tweed then it is recommended to start with plain variety of tweed. You can wear a tweed jacket with dark blue jeans and high boots. Incorporate a neutral t-shirt or a winter shirt under the jacket.

At work ? Tweed suit in London are quite popular as one of the formal attires. Heavy woven tweeds can make you look older, so try buying tweed suits in London that are finely weaved and pair it with your regular shirts like white or blue with smart formal shoes. Believe it or not, it can win you praise at work.

Accessorise ? Apart from wearing tweed suits in London as attire you can even use accessories made out of tweed. Tweed caps, laptop bags, scarves, gloves are a smart way to incorporate tweed in your winter collection. It is also a safe way of using tweed fabric if you are not too comfortable wearing it. There is even footwear that has tweed as their centre fabric and looks awesome.

Taking care of Tweed

Though the fabric boasts itself about being tough and rugged, it still requires a good care to use it for coming years as well. Due to its weave structure it often pick up dirt and stains that can get hard to remove. Make sure you take your tweed clothes for dry cleaning as washing them in washing machines can make them shrink. Also, keep them in cool dry place so that they do not get attracted by moths.

"

Comment by leilei3915 7 weeks and 2 days ago

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