I have a server where I wish to run a process using screen. I start a screen using:

screen -S <screen_name>

Detach using ctrl+a+d. But when try to reattach the screen using,

screen -r <screen_name>

It asks for screen password. Now I did not remember setting any password and the root user password do not work. How to reset this?

  • would apt purge screen; apt install screen be harmful (do you have data you would lose?) it's probably in a configuration file somewhere... – cat Jan 21 '16 at 16:48
  • i have seen that. – salman wahed Jan 21 '16 at 16:49
  • it seems like there may be configuration settings in ~/.screenrc; purge will not purge user-specific configurations. did you try deleting this file? – cat Jan 21 '16 at 16:51
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    (it would be helpful for you to edit your question to include what you have and haven't tried.) – cat Jan 21 '16 at 16:51
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    @cat Deleting the .screenrc then purging make it work. thank you. If you would like to write an answer, I shall accept that. – salman wahed Jan 21 '16 at 16:57

GNU Screen stores user's passwords in ~/.screenrc and authenticates using PAM in /etc/pam.d/screen.

Deleting ~/.screenrc should solve the problem.

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