预期脚本错误发送：执行时 Spawn id exp4 未打开

Question

我尝试运行此脚本，但修改后出现不同的错误。这是代码和输出。请帮忙。

文章末尾有更新调试信息

    #!/bin/bash
    (( $# != 1 )) && { echo >&2 "Usage: $0 \"[COMMAND]\""; exit 1; }
    servers_addresses=(10.10.10.10 )
    for server_address in ${servers_addresses[@]}; do
    expect <<EOF
    spawn ssh -t root@$server_address "$*"
    expect -timeout 2 "Are you sure you want to continue connecting (yes/no)?" { send "yes\n" }
    expect "s password:" { send "Correct_Password\n" }
    expect "s password:" { send "Wrong_Password_22222\n" }
    expect "s password:" { send "Wrong_Password_33333\n" }
    expect eof
    EOF
    done

输出如下：

    goldberg188@Test-Server ~$ ./test.sh "sudo cat /etc/hosts"
    spawn ssh -t [email protected] sudo cat /etc/hosts
    [email protected]'s password:
    # Do not remove the following line, or various programs
    # that require network functionality will fail.
    10.10.10.10             TEST-004 localhost.localdomain localhost
    ::1             localhost6.localdomain6 localhost6
    Connection to 10.10.10.10 closed.
    expect: spawn id exp4 not open
        while executing
    "expect "s password:" { send "Wrong_Password_33333\n" }"

如果我这样修改，那么输出会有点不同

    expect "s password:" { send "Wrong_Password_11111\n" }
    expect "s password:" { send "Correct_Password\n" }
    expect "s password:" { send "Wrong_Password_33333\n" }

    goldberg188@Test-Server ~$ ./test.sh "sudo cat /etc/hosts"
    spawn ssh -t [email protected] sudo cat /etc/hosts
    [email protected]'s password:
    # Do not remove the following line, or various programs
    # that require network functionality will fail.
    10.10.10.10             TEST-004 localhost.localdomain localhost
    ::1             localhost6.localdomain6 localhost6
    Connection to 10.10.10.10 closed.
    expect: spawn id exp4 not open
        while executing
    "expect eof"

如果第三行输入正确的密码，则不会出现任何错误。这个运行良好。

    expect "s password:" { send "Wrong_Password_11111\n" }
    expect "s password:" { send "Wrong_Password_22222\n" }
    expect "s password:" { send "Correct_Password\n" }


    goldberg188@Test-Server ~$ ./test.sh "sudo cat /etc/hosts"
    spawn ssh -t [email protected] sudo cat /etc/hosts
    [email protected]'s password:
    # Do not remove the following line, or various programs
    # that require network functionality will fail.
    10.10.10.10             TEST-004 localhost.localdomain localhost
    ::1             localhost6.localdomain6 localhost6
    Connection to 10.10.10.10 closed.

忽略编辑：我知道如何同时运行 2 个命令。

更新：调试信息-修改为

    exp_internal 1
    expect "s password:" { send "Wrong_Password_11111\n" }
    expect "s password:" { send "Correct_Password\n" }
    expect "s password:" { send "Wrong_Password_33333\n" }

输出：

    goldberg188@Test-Server ~$ ./test.sh "sudo cat /etc/host"
    spawn ssh -t [email protected] sudo cat /etc/host
    [email protected]'s password:
    expect: does "[email protected]'s password: " (spawn_id exp4) match glob pattern "s password:"? yes
    expect: set expect_out(0,string) "s password:"
    expect: set expect_out(spawn_id) "exp4"
    expect: set expect_out(buffer) "[email protected]'s password:"
    send: sending "Wrong_Password_11111\n" to { exp4 }

    expect: does " " (spawn_id exp4) match glob pattern "s password:"? no


    expect: does " \r\n" (spawn_id exp4) match glob pattern "s password:"? no
    Permission denied, please try again.
    [email protected]'s password:
    expect: does " \r\nPermission denied, please try again.\r\r\[email protected]'s password: " (spawn_id exp4) match glob pattern "s password:"? yes
    expect: set expect_out(0,string) "s password:"
    expect: set expect_out(spawn_id) "exp4"
    expect: set expect_out(buffer) " \r\nPermission denied, please try again.\r\r\[email protected]'s password:"
    send: sending "Correct_Password\n" to { exp4 }

    expect: does " " (spawn_id exp4) match glob pattern "s password:"? no


    expect: does " \r\n" (spawn_id exp4) match glob pattern "s password:"? no
    cat: /etc/host: No such file or directory
    Connection to 10.10.10.10 closed.

    expect: does " \r\ncat: /etc/host: No such file or directory\r\r\nConnection to 10.10.10.10 closed.\r\r\n" (spawn_id exp4) match glob pattern "s password:"? no
    expect: read eof
    expect: set expect_out(spawn_id) "exp4"
    expect: set expect_out(buffer) " \r\ncat: /etc/host: No such file or directory\r\r\nConnection to 10.10.10.10 closed.\r\r\n"
    expect: spawn id exp4 not open
        while executing
    "expect eof"

Answer 1

假设您不是故意发送错误的密码，请使用exp_continue循环结构：

expect <<EOF
set passwds {foo bar baz}
set i 0
spawn ssh -t root@$server_address "$*"
expect {
    "continue connecting (yes/no)?" { send "yes\r"; exp_continue }
    " password: " { send "[lindex $passwds $i]\r"; incr i; exp_continue }
    eof
}
EOF

Answer 2

致谢：格伦·杰克曼

抱歉，Glenn，你的代码需要一些修改，我在这里添加了这些修改并使其正常运行。

这是其他可能需要它的人的修复代码。您可以将 IP 放在文本文件中，然后在 servers_addresses 内进行 cat。例如 servers_addresses=('cat ip_list.txt')

在 IP 列表中添加这样的 IP：10.10.10.1 10.10.10.2 10.10.10.3

如果需要的话还有更多示例。运行命令：

    ./test.sh "sudo cat /etc/hosts"

运行多个命令

    ./test.sh "sudo cat /etc/hosts & /etc/init.d/network status"

搜索和替换

    ./test.sh "sed -i -e 's/SEARCH_STRING/REPLACE_STRING/g' /tmp/FileNAME.txt"

完整代码：

    #!/bin/bash
    (( $# != 1 )) && { echo >&2 "Usage: $0 \"[COMMAND]\""; exit 1; }
    servers_addresses=( 10.10.10.10 192.168.10.1 )
    for server_address in ${servers_addresses[@]}; do
        expect <<EOF
    set passwds { password1 password2 password3 }
    set i 0
    spawn ssh -t root@$server_address "$*"
    expect {
        "Are you sure you want to continue connecting (yes/no)?" { send "yes\r"; exp_continue }
        "s password:" { send "[lindex \$passwds \$i]\r"; incr i; exp_continue }
        eof
    }
    EOF
    done