11-29-2011
the problem is that the file size is 100 MB - 150 MB
input file:
---------
1,2, ,TTT,DDFG,
1,2, ,TTT,DDFG,
1,2, ,TTT,DDFG,
7,8, ,TTT,DDFG,
1,2, ,TTT,DDFG,
1,2, ,TTT,DDFG,
output file should be like:
1,2, ,TTT,DDFG,
7,8, ,TTT,DDFG,
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WCSDUP(3) Linux Programmer's Manual WCSDUP(3)
NAME
wcsdup - duplicate a wide-character string
SYNOPSIS
#define _GNU_SOURCE
#include <wchar.h>
wchar_t *wcsdup(const wchar_t *s);
DESCRIPTION
The wcsdup() function is the wide-character equivalent of the strdup(3) function. It allocates and returns a new wide-character string
whose initial contents is a duplicate of the wide-character string pointed to by s.
Memory for the new wide-character string is obtained with malloc(3), and should be freed with free(3).
RETURN VALUE
The wcsdup() function returns a pointer to the new wide-character string, or NULL if sufficient memory was not available.
ERRORS
ENOMEM Insufficient memory available to allocate duplicate string.
CONFORMING TO
POSIX.1-2008. This function is not specified in POSIX.1-2001, and is not widely available on other systems.
SEE ALSO
strdup(3), wcscpy(3), feature_test_macros(7)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU
2009-02-04 WCSDUP(3)