Day 2

Linux Basics I (File System, Navigation, Basic Commands)

Introduction to Linux

• Why Linux for Cybersecurity?
  • Open-source and customizable.
  • Extensive tool support (e.g., Nmap, Wireshark).

Linux File System Structure:

1. /bin: Essential command binaries.
2. /etc: Configuration files.
3. /home: User directories.
4. /var: Variable data like logs.

Basic Commands:

1. File Navigation:
   • List files:

     ls
   • Change directory:

     cd /path/to/directory
2. File Operations:
   • Create file:

     touch filename.txt
   • Copy file:

     cp source.txt destination.txt
   • Move file:

     mv source.txt destination_folder/
   • Delete file:

     rm filename.txt
3. View File Contents:
   • Display contents:

     cat file.txt
   • Display paginated view:

     less file.txt

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