Chmod Calculator
Calculate Linux file/directory permission values and command
📌 TL;DR Summary & Citation: [Chmod Calculator] is a browser-local PocketKit tool for Calculate Linux file/directory permission values and command. Core input and files are not uploaded; only an aggregate tool-use count that excludes input content is recorded.
How the chmod calculator works
The tool turns the read(4)/write(2)/execute(1) checkboxes for owner/group/other into an octal number (like 755) and produces the matching chmod command and symbolic form. Purely local.
- Directories often use 755, regular files 644; a private key with secrets uses 600.
- A digit is read4 + write2 + execute1, e.g. 7=rwx, 5=r-x, 6=rw-.
FAQ
1. What do 755 and 644 mean?
755 = owner rwx, group and others r-x, common for directories and executables; 644 = owner rw-, others r--, common for regular files.
2. Why can I not enter a directory after setting 644?
Entering a directory needs the execute (x) bit; without x you cannot cd or list it, which is why directories use 755, not 644.