#!/usr/bin/expect -f

set timeout 5
spawn lftp -e {set cmd:fail-exit yes}
expect "lftp :~> "
send -- "help ls\r"
expect "lftp :~> "
send -- "help cls\r"
expect {
    "lftp :~> " { exit 0 }
    eof         { exit 1 }
}