01-19-2018
I'm not really sure of the point you're trying to make. An empty file is a zero length file. A file that isn't zero-length, whether it contains only spaces or not, is not an empty file. If you want to remove files that you consider to be "empty", then you'll need to check those those files.
I appreciate that English may not be your first language, but some punctuation would make it simpler to parse your statements.
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LEARN ABOUT DEBIAN
vrb_give
vrb_give(3) VRB Programmer's Manual vrb_give(3)
NAME
vrb_give - create a new virtual ring buffer
LIBRARY
-lvrb
SYNOPSIS
#include <vrb.h>
vrb_p vrb_give(vrb_p vrb, size_t size);
DESCRIPTION
vrb_give specifies how much data has been placed into the empty portion of the virtual ring buffer by the caller.
The caller will have called vrb_empty_len(3) and vrb_empty_ptr(3) to get the length of empty space in the buffer and a pointer to it, and
having placed some data into that space, starting from the pointer obtained and placing no more that the length obtained.
ARGUMENTS
vrb_p vrb
specifies which virtual ring buffer.
size_t size
specifies the length of data that has been placed into the virtual ring buffer empty space by the caller.
RETURN VALUE
int
On success, 0 is returned. On error, -1 is returned.
ERRORS
If an error is returned, then errno will have one of the following values:
EINVAL An invalid virtual ring buffer pointer was specified.
ENOSPC The specified length is greater than the empty space in the virtual ring buffer.
SEE ALSO
vrb(3), vrb_capacity(3), vrb_data_len(3), vrb_data_ptr(3), vrb_destroy(3), vrb_get(3), vrb_get_min(3), vrb_init(3), vrb_init_opt(3),
vrb_is_empty(3), vrb_is_full(3), vrb_is_not_empty(3), vrb_is_not_full(3), vrb_move(3), vrb_new(3), vrb_new_opt(3), vrb_put(3),
vrb_put_all(3), vrb_read(3), vrb_read_min(3), vrb_resize(3), vrb_space_len(3), vrb_space_ptr(3), vrb_take(3), vrb_uninit(3), vrb_write(3),
vrb_write_min(3)
vrb 2002-09-30 vrb_give(3)