chmod Calculator
Tick read, write and execute for owner, group and others – or type an octal like 750 – and get the symbolic form and the command.
Tick read, write and execute for the owner, group and others – or type an octal value – and see the symbolic form (rwxr-x---), what it means in words and the exact chmod command. Special bits (setuid, setgid, sticky) are supported with a fourth digit.
Common values
644– regular files (owner writes, everyone reads).755– folders and scripts.600– private keys,.envfiles, netplan YAML.2775– shared team folders: new files inherit the group.
常见问题
What do 755 and 644 mean?
755 = owner can read/write/execute, everyone else read/execute – typical for folders and scripts. 644 = owner read/write, everyone else read – typical for files.
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