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sortix--sortix/utils/date.cpp
Jonas 'Sortie' Termansen 82ffdb5ca8 Add date(1).
2013-12-17 14:30:35 +01:00

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C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
date.cpp
Print or set system date and time.
*******************************************************************************/
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdint.h>
#include <time.h>
int main(/*int argc, char* argv[]*/)
{
time_t current_time = time(NULL);
struct tm tm;
if ( !localtime_r(&current_time, &tm) )
error(1, errno, "time(%ji)", (intmax_t) current_time);
const size_t BUFFER_SIZE = 256;
char buffer[BUFFER_SIZE];
strftime(buffer, BUFFER_SIZE, "%a %b %d %H:%M:%S %Y", &tm);
printf("%s\n", buffer);
return 0;
}