@node unlink, file system
@subheading Syntax

@example
#include <unistd.h>

int unlink(const char *file);
@end example

@subheading Description

This function removes a file from the file system. 

@subheading Return Value

Zero on success, nonzero on failure. 

@subheading Portability

@portability !ansi, posix

@subheading Example

@example
unlink("data.txt");
@end example