File (command)

file
	Example usage of file
Developer(s)	AT&T Bell Laboratories
Initial release	1973 as part of Unix Research Version 4; 1986 open-source reimplementation
Repository	github.com/file/file
Written in	C
Operating system	Unix, Unix-like, Plan 9, IBM i
Platform	Cross-platform
Type	File type detector
License	BSD license, CDDL; Plan 9: MIT License
Website	darwinsys.com/file/

The file command is a standard program of Unix and Unix-like operating systems for recognizing the type of data contained in a computer file.

Example usage of `file`
Developer(s)	AT&T Bell Laboratories
Initial release	1973 (1973) as part of Unix Research Version 4; 1986 (1986) open-source reimplementation
Repository	github.com/file/file
Written in	C
Operating system	Unix, Unix-like, Plan 9, IBM i
Platform	Cross-platform
Type	File type detector
License	BSD license, CDDL Plan 9: MIT License
Website	darwinsys.com/file/