如何 运行 带有 expect 的 SSH 脚本？

Question

我可以使用 expect 在远程 SSH 主机上执行命令。一切都很好，只要我将自己限制在一行硬编码 command.However，我想创建一个本地命令脚本以远程执行。

这个有效，但只能使用一行命令：

#!/usr/bin/expect

set USER [lindex $argv 0]
set PASSWORD [lindex $argv 1]
set CMD [lindex $argv 2]
set timeout 10

spawn ssh -o StrictHostKeyChecking=no "$USER" "$CMD"

expect {
        timeout {
                puts "Timeout happened"
                exit 8
                }
        eof {
                puts "EOF received"
                exit 4
                }
        -nocase "password:" {
                send "$PASSWORD\n"
                expect {
                        "keys" {
                        exit 200
                                }
                        -nocase "password:" {
                                        exit 1
                                        }
                        }
                }
}

这个不行：

#!/usr/bin/expect

set USER [lindex $argv 0]
set PASSWORD [lindex $argv 1]
set timeout 10

spawn ssh -o StrictHostKeyChecking=no "$USER" < /var/myscript.sh
#                           This don't work! ^^^^^^^^^^^^^^^^^^^

expect {
        timeout {
                puts "Timeout happened"
                exit 8
                }
        eof {
                puts "EOF received"
                exit 4
                }
        -nocase "password:" {
                send "$PASSWORD\n"
                expect {
                        "keys" {
                        exit 200
                                }
                        -nocase "password:" {
                                        exit 1
                                        }
                        }
                }
}

Answer 1

< 是 shell 语法，所以你可以这样做：

spawn bash -c "ssh -o StrictHostKeyChecking=no $USER < /var/myscript.sh"