"vlist" and "vssh" commands for working with Vagrant virtual machines. Drop these in your .bashrc. vlist creates a list of all your running VMs. vssh loops through all your VMs, and attempts to run commands on each of them.

Vagrant_SSH_Shortcuts

# vlist generates a list of running Vagrant VMs
vlist () 
{ 
    vagrant status | awk '/running/{ print $1 }'
}

# vssh runs your command(s) on all VMs.  Enclose in quotes to run multiple commands.
vssh () 
{ 
    [ $# -ne 1 ] && (echo "Usage:  vssh command"; return 1)
    command="$1";
    for host in $(vlist);
    do
        vagrant ssh $host -c "$command";
    done
}

Updated to properly parse multiple commands.