28 lines
549 B
C
28 lines
549 B
C
#include <sys/stat.h>
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#include <stdio.h>
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#include <time.h>
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#include <utime.h>
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const char *filename = "input.txt";
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int main() {
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struct stat foo;
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time_t mtime;
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struct utimbuf new_times;
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if (stat(filename, &foo) < 0) {
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perror(filename);
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return 1;
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}
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mtime = foo.st_mtime; /* seconds since the epoch */
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new_times.actime = foo.st_atime; /* keep atime unchanged */
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new_times.modtime = time(NULL); /* set mtime to current time */
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if (utime(filename, &new_times) < 0) {
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perror(filename);
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return 1;
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}
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return 0;
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}
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