Relay commands over SSH.
Relay is a simple library that allows you to send commands over SSH. It uses your own SSH, not a Ruby version, so you can profit from your settings and public/private keys.
The following options are available:
-c command Executes the command on the passed servers. -f recipe Reads commands from a file and executes them in the passed servers.
To send a command to two servers called
$ relay -c "ls -al" server1 server2 $ relay -c "cd foo; ls" server1 server2 $ relay -c "cd foo" -c "ls" server1 server2
If you want to send more commands, you can write a shell script:
$ cat recipe.sh cd foo ls mkdir -p bar/baz $ relay -f recipe.sh server1 server2
It will execute those commands on both servers and show the output.
You can use each flag many times, so this is possible:
$ relay -f recipe1.sh -f recipe2.sh server1 server2 server3
$ gem install relay
Copyright (c) 2009, 2010 Michel Martens and Damian Janowski
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