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results scroll past the top of the screen, type | more after the command to cause the results to pause before scrolling past the top of the screen. To see a list of all commands available which begin with a certain letter, type the letter and then two tabs. 

Even the usual login screen shows lot’s of useful information regarding documentation, support, basic system information and last login data: 

Welcome to Ubuntu 18.04 LTS (GNU/Linux 4.15.0-22-generic s390x) 

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System information as of Tue Jun 5 17:17:17 EDT 2018 

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0 packages can be updated. 0 updates are security updates. 

Last login: Tue Jun 5 17:46:34 2018 from 10.177.178.179 

