telnet连接Android模拟器后，输入命令时出现"KO: unknown command, try 'help' "

今天想在模拟器上测试以下接听电话相关的功能，通过telnet连接模拟器成功后，输入命令时却出现错误

$ telnet localhost 5554
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Android Console: Authentication required
Android Console: type 'auth <auth_token>' to authenticate
Android Console: you can find your <auth_token> in
'/home/username/.emulator_console_auth_token'
OK
gsm call 111111
KO: unknown command, try 'help'

然后按照提示输入help：

help
Android console command help:

help|h|?         print a list of commands
avd              control virtual device execution
auth             user authentication for the emulator console
quit|exit        quit control session

真是不看不知道，一看吓一跳，居然就剩这么几个可用命令了。

再回头看最开始的错误信息，发现原来是"auth"在作怪，查看其说明，需要输入"auth_token"才能解锁其它命令。

help auth
use 'auth <auth_token>' to get extended console functionality

根据提示，auth_token是存储在/home/username/.emulator_console_auth_token中。

接下来执行： 'auth <auth_token>'

然后再来看看help命令：

help
Android console command help:

help|h|?         print a list of commands
event            simulate hardware events
geo              Geo-location commands
gsm              GSM related commands
cdma             CDMA related commands
crash            crash the emulator instance
kill             kill the emulator instance
network          manage network settings
power            power related commands
quit|exit        quit control session
redir            manage port redirections
sms              SMS related commands
avd              control virtual device execution
qemu             QEMU-specific commands
sensor           manage emulator sensors
finger           manage emulator finger print

try 'help <command>' for command-specific help

我们需要的命令又回来了。

然后就可以通过"gsm call 123456789"给模拟器打电话了。

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