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Top Forums Shell Programming and Scripting Redirecting stdout continously to a file Post 302662535 by Corona688 on Tuesday 26th of June 2012 04:58:51 PM
Old 06-26-2012
Modify your C program to either disable the buffer for stdout, print a newline more often, or flush its output more often.

stderr and stdout are intended to be separate, however. stdout is for data, stderr is for errors. Why not just print everything you want in the logfile to stdout?
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explain_puts_or_die(3)					     Library Functions Manual					    explain_puts_or_die(3)

NAME
explain_puts_or_die - write a string and a newline to stdout and report errors SYNOPSIS
#include <libexplain/puts.h> void explain_puts_or_die(const char *s); int explain_puts_on_error(const char *s); DESCRIPTION
The explain_puts_or_die function is used to call the puts(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_puts(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_puts_on_error function is used to call the puts(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_puts(3) function, but still returns to the caller. s The s, exactly as to be passed to the puts(3) system call. RETURN VALUE
The explain_puts_or_die function only returns on success, see puts(3) for more information. On failure, prints an explanation and exits, it does not return. The explain_puts_on_error function always returns the value return by the wrapped puts(3) system call. EXAMPLE
The explain_puts_or_die function is intended to be used in a fashion similar to the following example: explain_puts_or_die(s); SEE ALSO
puts(3) write a string and a trailing newline to stdout explain_puts(3) explain puts(3) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2009 Peter Miller explain_puts_or_die(3)
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