expect使用示例

如果通过对expect重定向的方式写脚本的话，这样的脚本适合出现在脚本文件中，如果是通过expect -c这样的方式调用，则运行在命令行上

示例一

该示例适合运行在脚本文件中，然后通过expect命令运行脚本文件，比如脚本名test.sh

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expect << 'END'
  set pass "segfault"
  spawn ssh root@segfault.net
  expect {
        "yes/no" { send "yes\r"; exp_continue }
        "password:" { send -- "$pass\r" }
  }
  expect "Continuing in 60 sec..." { sleep 60; send "\r" }
  # expect "Press any key to continue" { send "\r" }
  expect "Would you like to see your SECRET now? (y/N)" { send "y" }  
  interact
END

运行方式

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  expect test.sh

示例二

该示例适合运行在命令行，如果将该示例添加到脚本文件运行则会执行不了，直接复制该示例粘贴到命令行上回车运行即可

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expect -c '
  set pass "segfault"
  spawn ssh root@segfault.net
  expect {
        "yes/no" { send "yes\r"; exp_continue }
        "password:" { send -- "$pass\r" }
  }
  expect "Continuing in 60 sec..." { sleep 60; send "\r" }
  # expect "Press any key to continue" { send "\r" }
  expect "Would you like to see your SECRET now? (y/N)" { send "y" }  
  interact
'

示例三

这是一个常规示例，同样，运行在命令行上

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expect -c '  
  set pass "Mind@123"
  spawn ssh root@192.168.0.2
  expect {
        "yes/no" { send "yes\r"; exp_continue }
        "password:" { send -- "$pass\r" }
  }  
  interact
'