Concessio

Understand file permissions

Concessio helps you understand and convert between unix permissions representations

  • Convert between symbolic and numeric representations of UNIX file permissions
  • Use toggle buttons to update the symbolic and numeric fields
  • Open a file to read it's permissions and convert them
  • Calculate umask values and see the resulting permissions for new files and directories
  • Open the help dialog to read and understand the UNIX permissions system

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Explore the interface

Application main page, converting between numeric and symbolic permission
Applications main page, updating a file's permissions
Application umask page, calculating the umask value for a base permission
Application help page, explaining unix permissions

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More Information

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Newest Release

Latest version v1.0.0 released on 2026-10-03 00:00:00 UTC.

Keywords

  • Calculator
  • Concessio
  • Converter
  • Education
  • Linux
  • Permissions
  • System
  • Utility

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