Introduction To Unix Shell Accounts at Lancaster University Tabitha Tipper
[email protected] March 13, 2017 Copyright (c) 2004,2005,2006 TABITHA TIPPER. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled \GNU Free Documentation License". WARNING: While the following document makes every effort to be factually correct some er- rors may be present, this document was only written by humans. Be sure to understand what you're typing before you press enter as no responsibility will be taken for incorrect information or loss of data caused by use or reference to this document. 1 Contents 1 Welcome to the Unix System at Lancaster (unix.lancs.ac.uk) 6 1.1 What this document tells you . 6 1.2 What is the point of the Unix systems . 6 1.3 Primer on the concepts involved . 6 1.4 About this document . 6 1.5 About the author . 8 1.6 Acknowledgements . 8 2 User Accounts 9 2.1 What? Why? What can it do? . 9 2.2 Home directories (∼)................................... 10 2.3 Details . 10 2.4 groups . 10 2.5 Passwords and why they matter . 10 2.6 Finding out other peoples usernames . 11 2.7 Seeing who else is logged on and what they're doing . 11 2.8 Finding out who's been logging in when .