#Day 4 -Navigating Linux: File System Hierarchy & Essential Commands Part-1 🌲🖥️
Unveiling the Structure and Power of Linux
Introduction :-
Linux, a powerful and widely used operating system, organizes its file system in a hierarchical structure. Everything in Linux is treated as a file, and this organized tree-like structure is crucial for managing the system efficiently. Let's explore the key directories in the Linux File System Hierarchy and delve into some essential commands for navigating and manipulating files and directories.
📂🌲Linux File System Hierarchy -
Linux File System Hierarchy In Linux everything is represented as a file including a hardware program, the files are stored in a directory, and every directory contains a file with a tree structure. That is called File System Hierarchy. Linux uses single rooted, inverted tree-like structure.
Root Directory (/) 🌳:
Top-level directory.
Starting point of the File System Hierarchy.
All directories arise from the root directory.
/root 👑:
- Home directory for the root user (superuser).
/bin 📦:
User Binaries.
Common Linux commands for all users.
Contains binary executables.
/sbin 🛠️:
System Binaries.
Commands for system administrators.
Used for system maintenance.
/dev 🖥️:
Device Files.
Contains hardware device files.
Includes terminal devices, USB, etc.
/var 📂:
Variable Files.
Contains log files, databases, emails, and temporary files.
Growing file contents.
Subdirectories:
/var/log 📜: System log files.
/var/lib 💽: Database and package files.
/var/mail 📧: Email storage.
/var/tmp 🗑️: Temporary files for reboot.
/mnt 🏔️:
Mount Directory.
Used to mount a file system temporarily.
/media 📰:
Removable Media Devices.
Subdirectories for mounted removable media devices.
/usr 🧑💻:
User Binaries.
Applications and files used by users.
/etc ⚙️:
Configuration Files.
Core configuration files for the system and applications.
Contains startup and shutdown scripts.
/boot 👢:
Boot Loader Files.
Contains files needed to boot the system.
GRUB boot loader and Linux kernels stored here.
/opt 🌐:
Optional Applications.
Used for third-party software not in the distribution.
Software code stored here, binary code linked to bin directory.
/home 🏡:
Home Directory.
Secondary users' home directories.
/tmp ☁️:
Temporary Files.
Contains temporary files created by the system and users.
Files deleted on system reboot.
🐧Basic Linux Commands -
#pwd🧭:
- Shows the present working directory.
#ls📂:
- Lists available files and directories in the present working directory.
#uname🖥️:
- Displays the name of the kernel (OS).
#uname -r🔄:
- Shows the version of the kernel.
#cd📁:
- Changes the current directory.
#clear📺:
- Clears the terminal screen for a fresh start.
#whoami👤:
- Reveals the currently logged-in username.
#history📜:
- Displays a list of previously used commands.
#date📅:
- Shows the current time and date.
📁Create Directory using Commands -
1) Create Single Directory :
Command:
mkdir directory_name📂Example:
mkdir docs📁2) Create Multiple Directories :
Command:
mkdir dir1 dir2 dir3📁📁📁Example:
mkdir images videos music🖼️📹🎵3) Create Directory Path :
Command:
mkdir -p path/to/directory🛤️📂Example:
mkdir -p project/docs📁📁4) Create Number of Directories :
Command:
mkdir dir{1..5}📁📁📁📁📁Example:
mkdir week{1..7}📁📁📁📁📁📁📁
📝Create File using Commands -
1) Create Single File :
Command:
touch filename🖋️
- Example:
touch file.txt 📑2) Create Multiple Files :
Command:
touch file1 file2 file3📄📄📄
- Example:
touch doc1.txt doc2.txt 📑📑3) Create Number of Files :
Command:
touch file{1..5}.txt📄📄📄📄📄
- Example:
touch note
📋🔄🗑️Copy, Move, and Remove Files using Commands -
Copy File :
Command:
cp sourcefile destination📂Example:
cp file.txt backup/📄📂Copy All Data Starting with 'D' :
Command:
cp D* destination📂Example:
cp D* backup/📄📂
Move File or Directory :
Command:
mv source destination🔄Example:
mv file.txt documents/🔄📂Rename File or Directory:
Command:
mv oldname newname🔄Example:
mv data.txt newdata.txt🔄📄
Delete File :
Command:
rm filename🗑️Example:
rm old.txt🗑️Delete Directory and File :
Command:
rm -r directory_name🗑️Example:
rm -r docs🗑️
Note :
"-r" : for recursive.
Conclusion :
Understanding the Linux File System Hierarchy and basic commands is essential for effective system administration and user interaction. Whether creating directories, managing files, or navigating through the system, these commands form the foundation for efficient Linux usage. With a clear hierarchy and powerful commands, Linux provides a robust environment for both beginners and experienced users. 🚀🐧
🌟Thank you for taking the time to read this blog. I hope you gained valuable insights today! If you found the content helpful, please consider liking, sharing, and following for more insightful posts in the future. Your support means a lot. 🌟 Looking forward to sharing more knowledge with you! 🚀
🎉🌐 Let's bridge the distance and connect 🔗🤝Anup Deshmukh🎉😊
