Features of the Linux Operating System
Multiprogramming
Time-sharing
Multitasking
Virtual Memory
Shared Libraries
POSIX(Portable Operating System for the UNIX environment)- Compliance
Samba
Cron Scheduler
Network Information Service(NIS)
Data Archival Utilities
Web Server
Office suite
Licensing
Linux Architecture
Three main software components
Kernel
Shell
Linux Utilities and Application Program
Basic Commands in Linux
To navigate to a new directory, the present working directory or print working directory(pwd)
Example:
Forgotten whether youre logged in as root or another user, you can use the (whoami) command.
Navigating the Linux Filesystem
Changing Directories from the terminal with the command>>(cd)change directories
Example: how to change to the /etc directory used to store configuration files.
Example:
To see the contents of a directory, you can use the ls (list) command. The command lists both the files and directories contained in the directory.
For more information about the files and directories you can the -l switch after ls command.
Example:
Every command, application, or utility has a dedicated help file in Linux.
Example if I needed help using wireless cracking tool, aircrack-ng.
Simply type command>>aircrack-ng –help
