Unix - Print number of hard link with stat and change format of ctime on output (Implementation of ls command...
First thanks for your time then, my problem is i'm trying to implement ls command with a maximum of flags like (ls -laRt...). I understand the stat struct and all the time/ctime/strftime fonctions but when i want to print them on my output they give me a big number, so i found how to convert the timestamp of st_mtime with ctime but i want the result in "Month Day Hour:Minutes" like (ls -lRt)format without using strftime, it is possible or i have to implement this fonction too ? And the second question is, for my number of hard link how i convert the result print on my output something like "-77452048" into the "real" result ?
This is my main, i'm a begginer so i'm open to all critics thanks U !
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <err.h>
#include <sys/stat.h>
#include <string.h>
#include <time.h>
#include <pwd.h>
#include <grp.h>
#include <stdint.h>
int main (int argc, char **argv)
{
DIR *dir;
struct dirent *d;
struct stat s;
char chemin[256];
struct passwd *p;
p = getpwuid(geteuid());
struct group *grp;
grp = getgrgid(getgrnam("."));
if (argc != 2)
{
perror("Filenamen");
exit(-1);
}
if ((dir=opendir(argv[1])) == NULL)
{
perror("opendir error");
exit(-1);
}
while ((d = readdir(dir)) != 0)
{
if(!strcmp (d->d_name, "."))
{
continue;
}
if(!strcmp (d->d_name, ".."))
{
continue;
}
strcpy (chemin, argv[1]);
strcat (chemin, "/");
strcat (chemin, d->d_name);
if (!stat(chemin, &s))
{
printf((S_ISDIR(s.st_mode)) ? "d" : "-");
printf((s.st_mode & S_IRUSR) ? "r" : "-");
printf((s.st_mode & S_IWUSR) ? "w" : "-");
printf((s.st_mode & S_IXUSR) ? "x" : "-");
printf((s.st_mode & S_IRGRP) ? "r" : "-");
printf((s.st_mode & S_IWGRP) ? "w" : "-");
printf((s.st_mode & S_IXGRP) ? "x" : "-");
printf((s.st_mode & S_IROTH) ? "r" : "-");
printf((s.st_mode & S_IWOTH) ? "w" : "-");
printf((s.st_mode & S_IXOTH) ? "x" : "-");
} else
{
perror("Erreur dans stat");
}
printf(" ");
printf("%d", &s.st_nlink);
printf(" ");
printf("%s", p->pw_name);
printf(" ");
printf("%s", grp->gr_name);
printf(" ");
printf("%d", &s.st_mtime);
printf(" ");
printf("%9jd", (intmax_t)s.st_size);
printf(" ");
printf("%s ", d->d_name);
printf("n");
}
closedir(dir);
}
unix time ls ctime hardlink
add a comment |
First thanks for your time then, my problem is i'm trying to implement ls command with a maximum of flags like (ls -laRt...). I understand the stat struct and all the time/ctime/strftime fonctions but when i want to print them on my output they give me a big number, so i found how to convert the timestamp of st_mtime with ctime but i want the result in "Month Day Hour:Minutes" like (ls -lRt)format without using strftime, it is possible or i have to implement this fonction too ? And the second question is, for my number of hard link how i convert the result print on my output something like "-77452048" into the "real" result ?
This is my main, i'm a begginer so i'm open to all critics thanks U !
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <err.h>
#include <sys/stat.h>
#include <string.h>
#include <time.h>
#include <pwd.h>
#include <grp.h>
#include <stdint.h>
int main (int argc, char **argv)
{
DIR *dir;
struct dirent *d;
struct stat s;
char chemin[256];
struct passwd *p;
p = getpwuid(geteuid());
struct group *grp;
grp = getgrgid(getgrnam("."));
if (argc != 2)
{
perror("Filenamen");
exit(-1);
}
if ((dir=opendir(argv[1])) == NULL)
{
perror("opendir error");
exit(-1);
}
while ((d = readdir(dir)) != 0)
{
if(!strcmp (d->d_name, "."))
{
continue;
}
if(!strcmp (d->d_name, ".."))
{
continue;
}
strcpy (chemin, argv[1]);
strcat (chemin, "/");
strcat (chemin, d->d_name);
if (!stat(chemin, &s))
{
printf((S_ISDIR(s.st_mode)) ? "d" : "-");
printf((s.st_mode & S_IRUSR) ? "r" : "-");
printf((s.st_mode & S_IWUSR) ? "w" : "-");
printf((s.st_mode & S_IXUSR) ? "x" : "-");
printf((s.st_mode & S_IRGRP) ? "r" : "-");
printf((s.st_mode & S_IWGRP) ? "w" : "-");
printf((s.st_mode & S_IXGRP) ? "x" : "-");
printf((s.st_mode & S_IROTH) ? "r" : "-");
printf((s.st_mode & S_IWOTH) ? "w" : "-");
printf((s.st_mode & S_IXOTH) ? "x" : "-");
} else
{
perror("Erreur dans stat");
}
printf(" ");
printf("%d", &s.st_nlink);
printf(" ");
printf("%s", p->pw_name);
printf(" ");
printf("%s", grp->gr_name);
printf(" ");
printf("%d", &s.st_mtime);
printf(" ");
printf("%9jd", (intmax_t)s.st_size);
printf(" ");
printf("%s ", d->d_name);
printf("n");
}
closedir(dir);
}
unix time ls ctime hardlink
add a comment |
First thanks for your time then, my problem is i'm trying to implement ls command with a maximum of flags like (ls -laRt...). I understand the stat struct and all the time/ctime/strftime fonctions but when i want to print them on my output they give me a big number, so i found how to convert the timestamp of st_mtime with ctime but i want the result in "Month Day Hour:Minutes" like (ls -lRt)format without using strftime, it is possible or i have to implement this fonction too ? And the second question is, for my number of hard link how i convert the result print on my output something like "-77452048" into the "real" result ?
This is my main, i'm a begginer so i'm open to all critics thanks U !
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <err.h>
#include <sys/stat.h>
#include <string.h>
#include <time.h>
#include <pwd.h>
#include <grp.h>
#include <stdint.h>
int main (int argc, char **argv)
{
DIR *dir;
struct dirent *d;
struct stat s;
char chemin[256];
struct passwd *p;
p = getpwuid(geteuid());
struct group *grp;
grp = getgrgid(getgrnam("."));
if (argc != 2)
{
perror("Filenamen");
exit(-1);
}
if ((dir=opendir(argv[1])) == NULL)
{
perror("opendir error");
exit(-1);
}
while ((d = readdir(dir)) != 0)
{
if(!strcmp (d->d_name, "."))
{
continue;
}
if(!strcmp (d->d_name, ".."))
{
continue;
}
strcpy (chemin, argv[1]);
strcat (chemin, "/");
strcat (chemin, d->d_name);
if (!stat(chemin, &s))
{
printf((S_ISDIR(s.st_mode)) ? "d" : "-");
printf((s.st_mode & S_IRUSR) ? "r" : "-");
printf((s.st_mode & S_IWUSR) ? "w" : "-");
printf((s.st_mode & S_IXUSR) ? "x" : "-");
printf((s.st_mode & S_IRGRP) ? "r" : "-");
printf((s.st_mode & S_IWGRP) ? "w" : "-");
printf((s.st_mode & S_IXGRP) ? "x" : "-");
printf((s.st_mode & S_IROTH) ? "r" : "-");
printf((s.st_mode & S_IWOTH) ? "w" : "-");
printf((s.st_mode & S_IXOTH) ? "x" : "-");
} else
{
perror("Erreur dans stat");
}
printf(" ");
printf("%d", &s.st_nlink);
printf(" ");
printf("%s", p->pw_name);
printf(" ");
printf("%s", grp->gr_name);
printf(" ");
printf("%d", &s.st_mtime);
printf(" ");
printf("%9jd", (intmax_t)s.st_size);
printf(" ");
printf("%s ", d->d_name);
printf("n");
}
closedir(dir);
}
unix time ls ctime hardlink
First thanks for your time then, my problem is i'm trying to implement ls command with a maximum of flags like (ls -laRt...). I understand the stat struct and all the time/ctime/strftime fonctions but when i want to print them on my output they give me a big number, so i found how to convert the timestamp of st_mtime with ctime but i want the result in "Month Day Hour:Minutes" like (ls -lRt)format without using strftime, it is possible or i have to implement this fonction too ? And the second question is, for my number of hard link how i convert the result print on my output something like "-77452048" into the "real" result ?
This is my main, i'm a begginer so i'm open to all critics thanks U !
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <err.h>
#include <sys/stat.h>
#include <string.h>
#include <time.h>
#include <pwd.h>
#include <grp.h>
#include <stdint.h>
int main (int argc, char **argv)
{
DIR *dir;
struct dirent *d;
struct stat s;
char chemin[256];
struct passwd *p;
p = getpwuid(geteuid());
struct group *grp;
grp = getgrgid(getgrnam("."));
if (argc != 2)
{
perror("Filenamen");
exit(-1);
}
if ((dir=opendir(argv[1])) == NULL)
{
perror("opendir error");
exit(-1);
}
while ((d = readdir(dir)) != 0)
{
if(!strcmp (d->d_name, "."))
{
continue;
}
if(!strcmp (d->d_name, ".."))
{
continue;
}
strcpy (chemin, argv[1]);
strcat (chemin, "/");
strcat (chemin, d->d_name);
if (!stat(chemin, &s))
{
printf((S_ISDIR(s.st_mode)) ? "d" : "-");
printf((s.st_mode & S_IRUSR) ? "r" : "-");
printf((s.st_mode & S_IWUSR) ? "w" : "-");
printf((s.st_mode & S_IXUSR) ? "x" : "-");
printf((s.st_mode & S_IRGRP) ? "r" : "-");
printf((s.st_mode & S_IWGRP) ? "w" : "-");
printf((s.st_mode & S_IXGRP) ? "x" : "-");
printf((s.st_mode & S_IROTH) ? "r" : "-");
printf((s.st_mode & S_IWOTH) ? "w" : "-");
printf((s.st_mode & S_IXOTH) ? "x" : "-");
} else
{
perror("Erreur dans stat");
}
printf(" ");
printf("%d", &s.st_nlink);
printf(" ");
printf("%s", p->pw_name);
printf(" ");
printf("%s", grp->gr_name);
printf(" ");
printf("%d", &s.st_mtime);
printf(" ");
printf("%9jd", (intmax_t)s.st_size);
printf(" ");
printf("%s ", d->d_name);
printf("n");
}
closedir(dir);
}
unix time ls ctime hardlink
unix time ls ctime hardlink
asked Nov 14 '18 at 23:13
B. GregoireB. Gregoire
11
11
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