Chmod calculator
Convert between symbolic and octal Unix file permissions.
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About the chmod calculator
Converts Unix file permissions between octal and symbolic notation in either direction, and spells out what each of owner, group and others may do. Setuid, setgid and sticky bits are handled, including their capital-letter forms.
Frequently asked questions
What does 755 actually mean?
Owner may read, write and execute; group and others may read and execute only. It is the standard mode for directories and executable scripts.
What does the execute bit do on a directory?
It grants the right to traverse into it and reach the files inside. A directory with read but not execute lets you list names but not open anything within.