This section of the Unix Tutorial is created to make it even easier for you to find the right answer to your task or problem. If you have a suggestion on improving the structure of this reference index, please let me know.
Complete Reference Topics
These are some of the most fundamental areas of systems administration in my day-to-day life – both at customer sites, within my Tech Stack Solutions consultancy and even in the Unix Tutorial home office lab:
- SSH – what it is, how it works and what are the ways to troubleshoot
- sudo – basics and advanced techniques for privilege escalation
- Linux kernel – what it is, how it works and how you can use it effectively
- Docker – basics description and common operations
- tmux – why and how you should use tmux for better productivity
- SELinux – securing Red Hat based distributions
- AWS – getting started with AWS cloud
- OpenStack – how to setup and use your own (on-prem) cloud solution
Unix distros
Working with users and groups in Linux
UserID and GroupID
- find unix user id (user id in unix)
- find out group ID (gid) for unix user
- list groups a user belongs to
- how to create user accounts
- what to do if numeric ids are shown instead of usernames
- find if a user was created or deleted
sudo
File and directory manipulations
- mtime
- diff unix tutorial
- find large files in unix
- unix symlinks
- Linux: create directory
- what is ln?
- find files that belong to a unix user or group
Unix shells and shell sessions
Unix scripting
Unix distributions and versions
Linux Standard Base
Red Hat
X Window System
GDM – Gnome Display Manager
Networking
- netstat
- 5 things you can do with netstat
- ip command
- Test connectivity with curl
- Find network connections with lsof
I have forgotten/lost the Unix root/admin password on my Mac. It used to be the same as my Mac login, but it isn't anymore.
Hi Peter,
if you find Terminal in your Applications and start it, just type this in the command line:
sudo -i
this should ask for your (not root) password, and then give you root privileges.
That did it. Thank you very much.
Awesome! Glad to have in the Facebook group, feel free to message and post a question there.