Linux Permission Calculator

File Type

Permission Matrix

Owner (u)

Group (g)

Others (o)

r Read

w Write

x Execute

Numeric (Octal)

000

Symbolic

---------

Permission Breakdown

Owner

---

0

0+0+0

Group

---

0

0+0+0

Others

---

0

0+0+0

Direct Input

Enter Numeric (e.g., 755)

Enter Symbolic (e.g., rwxr-xr-x)

Common Presets

chmod Command

Apply these permissions with:

chmod 000 filename

Security Warning

These permissions may pose security risks.

Understanding Permissions

4 r (read)

Files: View contents | Directories: List files (ls)

2 w (write)

Files: Modify contents | Directories: Create/delete files

1 x (execute)

Files: Run as program | Directories: Enter directory (cd)

How to Calculate

Add the values for each permission type:
r (4) + w (2) + x (1) = 7 (full access)
r (4) + x (1) = 5 (read and execute)
r (4) = 4 (read only)

Combine three digits for owner, group, and others:
755 = rwxr-xr-x (owner: full, group/others: read+execute)