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
