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CS456 - Systems Programming
Spring 2023
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Displaying ./code/stat/statf.c
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
int main(int argc, char **argv)
{
if(argc != 2)
return 1;
struct stat fileStat;
if(stat(argv[1], &fileStat) < 0){
perror("Error");
exit(-1);
}
printf("Information for %s\n", argv[1]);
printf("---------------------------\n");
printf("File Size: \t\t%ld bytes\n", fileStat.st_size);
printf("Number of Links: \t%lu\n", fileStat.st_nlink);
printf("File inode: \t\t%ld\n", fileStat.st_ino);
printf("File mode: \t\t%o\n", fileStat.st_mode);
printf("Last Access: %ld\n", fileStat.st_atime);
printf("File Permissions: \t");
printf( (S_ISDIR(fileStat.st_mode)) ? "d" : "-");
printf( (fileStat.st_mode & S_IRUSR) ? "r" : "-");
printf( (fileStat.st_mode & S_IWUSR) ? "w" : "-");
printf( (fileStat.st_mode & S_IXUSR) ? "x" : "-");
printf( (fileStat.st_mode & S_IRGRP) ? "r" : "-");
printf( (fileStat.st_mode & S_IWGRP) ? "w" : "-");
printf( (fileStat.st_mode & S_IXGRP) ? "x" : "-");
printf( (fileStat.st_mode & S_IROTH) ? "r" : "-");
printf( (fileStat.st_mode & S_IWOTH) ? "w" : "-");
printf( (fileStat.st_mode & S_IXOTH) ? "x" : "-");
printf("\n\n");
printf("The file %s a symbolic link\n", (S_ISLNK(fileStat.st_mode)) ? "is" : "is not");
return 0;
}
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