Wait for linux machine to be rebooted

Posted by Theo on Super User See other posts from Super User or by Theo
Published on 2013-10-28T09:07:01Z Indexed on 2013/10/28 9:56 UTC
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Filed under:

linux

|

ssh

|

reboot

I have a small script to install on my remote machine an update.

I would like to reboot the machine remotely and if it is rebooted, continue with some more commands. What I currently do is:

ssh root@myMachine << COMMANDS_ISSUED
   ###... Tasks
   init 6
COMMANDS_ISSUED
sleep 180s
ssh root@myMachine << POST_REBOOT_COMMANDS
   ###.... More stuff
POST_REBOOT_COMMANDS

Is there a more elegant way to do it? Like pinging the machine all 5 seconds up to a maximum of 4 minutes? I play with a few linux machines which have different boot up times and if my script would continue immediately after reboot, this could safe quite some time for me. (Note: I don't want to parallelize execution over all machines as I want to see for each machine if everything worked fine)

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