Introduction to Linux Systems

Linux Tutorials - Herong's Tutorial Examples

∟Introduction to Linux Systems

This chapter provides introductions and tutorial on Linux operating systems. Topics include 'uname' to display operating system information; 'free' to display memory usages; 'who' to display logged-in users; 'w' to display commands running by logged-in users.

"uname" - Display System Information

"free" - Display Free and Used Memory

"who | w" - Logged-in Users and Their Running Commands

Takeaways:

"uname” command displays operating system information.
"free” command displays memory (RAM) usages.
"who" command displays logged-in users.
"w" command displays what commands are running by logged-in users.

Table of Contents

About This Book

►Introduction to Linux Systems

Cockpit - Web Portal for Administrator

Process Management

Memory Management

Files and Directories

Users and Groups

Block Devices and Partitions

LVM (Logical Volume Manager)

Installing CentOS

SELinux - Security-Enhanced Linux

Network Connection on CentOS

Internet Networking Tools

SSH Protocol and ssh/scp Commands

Software Package Manager on CentOS - DNF and YUM

vsftpd - Very Secure FTP Daemon

LDAP (Lightweight Directory Access Protocol)

Administrative Tasks

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