bash - 使用 expect 确认密码

Question

我想做的是编写一个 expect 脚本来备份服务器上的所有数据库，然后创建一个包含 sql 的加密 zip 文件(我无法让我的 tar/openssl 命令在 expect 中正常运行)文件。

这只是一个学习 expect 的练习，不是真正的备份解决方案。

我显然在这里缺乏一些理解。我想做的是:

• 将所有数据库备份到一个文件(完成)
• 运行 zip 命令创建一个加密的 zip 文件(完成……有点)
• 回复“输入密码:”

• 然后回复确认“验证密码:”

  #!/usr/bin/expect -f
  exp_internal 1
  set backupdir "/mnt/db-backups/"
  set now [clock seconds]
  set date [clock format $now -format {%Y-%m-%d}]
  set filename $date
  
  append filename "_dbbackups.sql"
  
  exec mysqldump -u root --all-databases --events > $backupdir$filename
  
  spawn zip -e $backupdir$filename.enc.zip $backupdir$filename
  
  expect {
      "Enter password: " { send "monkey"
      exp_continue
      }
      "Verify password: " {send "monkey"
      exp_continue
      }
  }
  

输出是

    $expect encrypt.sh 
    spawn zip -e /mnt/db-backups/2013-12-11_dbbackups.sql.enc.zip /mnt/db-backups/2013-12-11_dbbackups.sql
    parent: waiting for sync byte
    parent: telling child to go ahead
    parent: now unsynchronized from child
    spawn: returns {15733}

    expect: does "" (spawn_id exp6) match glob pattern "Enter password: "? no
    "Verify password: "? no
    Enter password: 
    expect: does "Enter password: " (spawn_id exp6) match glob pattern "Enter password: "? yes
    expect: set expect_out(0,string) "Enter password: "
    expect: set expect_out(spawn_id) "exp6"
    expect: set expect_out(buffer) "Enter password: "
    send: sending "monkey" to { exp6 }
    expect: continuing expect

    expect: does "" (spawn_id exp6) match glob pattern "Enter password: "? no
    "Verify password: "? no
    monkey
    expect: does "monkey" (spawn_id exp6) match glob pattern "Enter password: "? no
    "Verify password: "? no
    -- then I exited --

这是一个非常简单的脚本……但我很吃力。

Answer 1

问题很简单:

你必须按回车键。所以只需更改命令

send "monkey"

到

send "monkey\r"

(两者)