41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/*
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* Copyright (c) 2013 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* date.c
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* Print or set system date and time.
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*/
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#include <errno.h>
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#include <error.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <time.h>
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int main(void)
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{
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time_t current_time = time(NULL);
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struct tm tm;
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if ( !localtime_r(¤t_time, &tm) )
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error(1, errno, "time(%ji)", (intmax_t) current_time);
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const size_t BUFFER_SIZE = 256;
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char buffer[BUFFER_SIZE];
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strftime(buffer, BUFFER_SIZE, "%a %b %d %H:%M:%S %Y", &tm);
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printf("%s\n", buffer);
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return 0;
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}
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