kali-all-commands

🔐 Linux File Permissions — Quick Reference

⚡ Quick help for everyday permission tasks.
📘 Need a deep dive? → Linux File Permissions — Full Guide

---

List Files with Permissions

ls -la /mnt/c/Users/akash/Desktop

This shows: permissions · links · owner · group · size · date · name

---

Understanding Permission Format

rwxr-xr-x
│││ │││ │││
│││ │││ └── Others: read + execute
│││ └───── Group:  read + execute
└──────── Owner:  read + write + execute

Symbol	Meaning	Value
r	Read	4
w	Write	2
x	Execute	1
-	None	0

---

Common Permission Combos

Numeric	Symbolic	Use Case
777	rwxrwxrwx	Full access for everyone (⚠️ use carefully)
755	rwxr-xr-x	Executable files & directories
644	rw-r--r--	Text/config files
600	rw-------	Private files (SSH keys, etc.)
500	r-x------	Read+execute for owner only
000	---------	No access at all

---

Quick Commands

# Full permissions for everyone
chmod 777 filename

# Standard directory permissions
chmod 755 /mnt/c/Users/akash/Desktop/*

# Standard file permissions
chmod 644 /mnt/c/Users/akash/Desktop/*

# Recursive — all directories to 755
find /path -type d -exec chmod 755 {} \;

# Recursive — all files to 644
find /path -type f -exec chmod 644 {} \;

---

Change Ownership

# Change owner
sudo chown username filename

# Change owner + group
sudo chown username:groupname filename

# Recursive
sudo chown -R username:groupname /path/to/dir

---

📘 Want to learn more? Check the full detailed guide:
Linux File Permissions — Complete Reference

---

| ← Back to All Commands | | — |