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Full Discussion: Problem!!
Top Forums UNIX for Dummies Questions & Answers Problem!! Post 43649 by myelvis on Thursday 20th of November 2003 10:09:14 AM
Old 11-20-2003
Problem!!

Hi All,

can anyone tell me the way to clear the contnents of the file .

i am trying to do some thing like this

if [ -s ../test] ; then
do
"Clear the contents of the file .... truncate the whole file to ZERO if size is greater than zero"

done

I am aware of the the function truncate() in c .. but i would like to know the way to do this in the shell program ..

Regards
 

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explain_truncate_or_die(3)				     Library Functions Manual					explain_truncate_or_die(3)

NAME
explain_truncate_or_die - truncate a file and report errors SYNOPSIS
#include <libexplain/truncate.h> void explain_truncate_or_die(const char *pathname, long long length); DESCRIPTION
The explain_truncate_or_die function is used to call the truncate(2) system call. On failure an explanation will be printed to stderr, obtained from explain_truncate(3), and then the process terminates by calling exit(EXIT_FAILURE). This function is intended to be used in a fashion similar to the following example: explain_truncate_or_die(pathname, length); pathname The pathname, exactly as to be passed to the truncate(2) system call. length The length, exactly as to be passed to the truncate(2) system call. Returns: This function only returns on success. On failure, prints an explanation and exits. SEE ALSO
truncate(2) truncate a file to a specified length explain_truncate(3) explain truncate(2) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2008 Peter Miller explain_truncate_or_die(3)
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