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I connect to many servers daily. my ssh config default username is "admin"

but servers comes from different environnements and username can changes. sometimes it will be "ec2-user" or "exploitation" or "something-else" ...

Is there a way SSH remember that last connection to 192.0.2.1/server.example.org was with "ec2-user" ?

So I don't have to specify "-l ec2-user" next time.

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You can set these up yourself in your configuration file $HOME/.ssh/config.

For example:

Host *.amazonaws.com
        User ec2-user

Host 192.0.2.1
        User centos
  • sadly, there is no rule/pattern that can group servers. I can have ec2-user or admin or centos inside amazon servers – exeral Nov 18 '20 at 22:15
  • @exeral You're going to have a lengthy config file then. – Michael Hampton Nov 19 '20 at 9:10
  • You can put defaults at the end of the file, and override them earlier in the file. So if you want to use the user ec2-user on most *.amazonaws.com servers, but admin or centos on only a few, you can put an entry for Host *.amazonaws.com, User ec2-user at the end of the file and entries for the others earlier. Or override it on the command line for those anomalous hosts. – Gordon Davisson Nov 19 '20 at 16:55

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