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Chmod Calculator

Convert Unix permissions to octal and symbolic notation.

Calculated Output

Octal 755

Symbolic rwxr-xr-x

Formula: Each digit = read(4) + write(2) + execute(1)

Step-by-Step Breakdown

1. Values used:

2. Owner (0-7) = 7

3. Group (0-7) = 5

4. Other (0-7) = 5

6. Octal = 755

7. Symbolic = rwxr-xr-x

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The math behind it

Each digit adds read (4), write (2) and execute (1). 7 is rwx, 5 is r-x, 4 is r--.

755 means rwxr-xr-x.

What is 644?

rw-r--r-- - owner can read/write, everyone else read-only.