[cs615asa] How to get ec2 default username

[Zhengkai Wei]

can we do that?
I think image-id is in EC2_BACKUP_FLAGS_AWS

> 在 2018年5月17日，上午8:13，Yifang Yuan <yyuan17 at stevens.edu> 写道：
> 
> Why don’t you specify the AMI of system when you create instance? If you choose ubuntu, username is always ubuntu
> 
> 
>> On May 17, 2018, at 05:21, Zhengkai Wei <zwei11 at stevens.edu> wrote:
>> 
>> Hi,
>> 
>> Is anyone know elegant way to get ec2 default username?
>> 
>> I find two way to get username one way is use ‘root' as username and use 'sudo ssh’, But I’m not sure in real environment we can using sudo or not.
>> 
>> Another way is try every possible. I don’t think that is a good idea.
>> 
>> Any one know any better way?
>> 
>> I don’t know the user setting of EC2_BACKUP_FLAGS_AWS that means I don’t know the operation system I need backup on.
>> 
>> The different system need use different username to login ex. ec2_user ,ubuntu, root …
>> 
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