Interactive Unix File Permissions Calculator
Select the appropriate permissions for Owner, Group, and Others to generate the correct numeric (octal) value, symbolic notation, and chmod command for Unix-like systems.
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Unix permissions string
chmod 755 filename
Replace 'filename' with your actual file or directory name
Permission to view the contents of the file or list directory contents.
Permission to modify the file contents or add/remove files in a directory.
Permission to run the file as a program or access a directory.
Each permission type (Owner, Group, Others) gets a number from 0-7 based on which permissions are granted. Read=4, Write=2, Execute=1. Add them together: Read+Write+Execute = 4+2+1 = 7. The final chmod value combines all three numbers (e.g., 755 = Owner:7, Group:5, Others:5).