Permissions

Linux chown command

Change file ownership. Use elevated privileges only when needed.

Availability: Common Linux commands; shell built-ins and external implementations may differ by distribution.中文

Syntax

chown [OPTION]... [OWNER][:[GROUP]] FILE...

Examples

Set the owner and group of one file.

sudo chown alice:developers ./report.txt

Change ownership of a directory tree (review the path carefully).

sudo chown -R alice:developers ./project

Parameters, options and clauses

Option / clause	Description
`OWNER`	Set the file owner; a user name or numeric ID may be used.
`OWNER:GROUP`	Set owner and group together.
`-R, --recursive`	Change ownership recursively.
`-h, --no-dereference`	Affect symbolic links rather than their targets (where supported).
`-c, --changes`	Report only files whose ownership changed.
`-v, --verbose`	Report every processed file.
`--reference=RFILE`	Copy owner and group from RFILE.

Safety note

Review a command and its target before running it. Commands that alter files, services, accounts, disks, permissions or databases may be difficult to reverse. Test in a safe environment and keep backups.

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