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#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
int
main(int argc, char *argv[])
{
int c;
int u = 0;
char buffer[256];
time_t now;
now = time(NULL);
char FORMAT[256] = "%c";
struct tm *timeinfo;
while((c = getopt(argc, argv, "u")) != -1) {
switch(c) {
case 'u':
u = 1;
break;
}
}
timeinfo = localtime(&now);
if(u)
timeinfo = gmtime(&now);
if(timeinfo == NULL) {
fprintf(stderr, "date: %s\n", strerror(errno));
return 1;
}
if(argc > optind && argv[optind][0] == '+') {
argv[optind]++;
strcpy(FORMAT, argv[optind]);
}
strftime(buffer, 256, FORMAT, timeinfo);
puts(buffer);
return 0;
}
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