UNIX for Advanced & Expert Users

date -v
find . -type f -mmin -10
                   (find: bad option -mmin)

time.h -->
struct timeval {
        time_t          tv_sec;         /* seconds */
        suseconds_t     tv_usec;        /* and microseconds */
};

stat.h -->
struct stat {
        dev_t           st_dev;
        ino_t           st_ino;
        mode_t          st_mode;
        nlink_t         st_nlink;
        uid_t           st_uid;
        gid_t           st_gid;
        dev_t           st_rdev;
        off_t           st_size;
        timestruc_t     st_atim;
        timestruc_t     st_mtim;
        timestruc_t     st_ctim;
        blksize_t       st_blksize;
        blkcnt_t        st_blocks;
        char            st_fstype[_ST_FSTYPSZ];
};
 
#define st_mtime        st_mtim.tv_sec

time_impl.h -->
typedef struct timespec timestruc_t;    /* definition per SVr4 */

# cat agenew.c
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
int main (int argc, char* argv[]) {
int modift;struct stat* buf;
buf=(struct stat *)malloc(sizeof (struct stat));
if (stat(argv[1],buf) != 0) {
perror(argv[1]);
return EXIT_FAILURE;}
(int) modift =difftime(time(NULL),buf->st_mtime);
printf("%d\n",modift);}

# gcc agenew.c -o agenew ; for file in `find . -type f `; do agemin=$(echo "`./agenew $file`/60"|bc)
if [ $agemin -gt 10 ] ; then echo "$file's age is $agemin min" ; fi; done

man find

date -v
find . -type f -mtime +10