在linux / unix中生成，期望和发送命令是什么

Question

The following three lines having three commands(spawn,expect,send), but what it does actually. Please explain any one

spawn ssh -oStrictHostKeyChecking=no -oCheckHostIP=no usr@$myhost.example.com'<br>
expect "password"<br>
send "$PWD\n" <br>
EOD

Answer 1

It is part of an expect script:

spawn opens a new process

expect waits for the previous spawned process to output the "expected" string (password in this case)

send writes to the spawned process stdin

EOD has no meaning in expect, perhaps it is part of another script?