Let's start with the opening act!
SSH
Secure Shell Protocol
Port: 22
What is SSH?
-
Network Protocol used for remote administration
-
Created in 1995 by Tatu Ylönen, SSH protocol
-
Uses Public-key based authentication for controlled access
Why SSH?
And
Alternatives?
rlogin
telnet
ftp
How it works?
How to connect?
- SSH client
- Access permission (User and password)
- Server address (IP/URL)
ssh <user>@<ip-address>
-v: verbose
-i: identify file (.pem file)
Processes & Services
- Each program in execution is a process
- All processes are tracked by Operating system
- Linux keep process details in /etc/proc
Lifecycle of process
Process management?
View all active processes
ps
-a: all process
-u: for users in userlist
Services
Set of processes
How to manage services?
systemd
Systemd: service manager
- Check status
- Start service
- Stop service
- Control service
systemd
status
<service>
start
stop
enable
Logging
Questions?
Thank you!
Kernel (Drivers)
Copy of LearningTheLinux
By Mohit Bansal
Copy of LearningTheLinux
A filler talk on how open source evolved over time and how git came into picture. The skills that can be useful to start contributing in open source, both technical and non-technical.
