Read file into String and do a loop in Expect Script

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The code should read the contents of the two files into lists of lines, then iterate over them. It ends up like this:

# Set up various other variables here ($user, $password)

# Get the list of hosts, one per line #####
set f [open "host.txt"]
set hosts [split [read $f] "\n"]
close $f

# Get the commands to run, one per line
set f [open "commands.txt"]
set commands [split [read $f] "\n"]
close $f

# Iterate over the hosts
foreach host $hosts {
    spawn ssh $user@host
    expect "password:"
    send "$password\r"

    # Iterate over the commands
    foreach cmd $commands {
        expect "% "
        send "$cmd\r"
    }

    # Tidy up
    expect "% "
    send "exit\r"
    expect eof
    close
}

You could refactor this a bit with a worker procedure or two, but that’s the basic idea.

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