implementato un programma che legge da linea di ocmando il percorso di una directory e fornisce in output statistiche relative ai file: nome,inode,grandezza in byte, check se il file e' regolare e in tal caso i primi 10 caratteri

5.list_file_directory/list.c

@@ -0,0 +1,85 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+
+int main (int index, char** in_data){
+     
+     if (index < 2){
+          fprintf(stderr,"Please specify a directory into command line\n");
+          exit(-1);
+     }
+     
+     if (index > 2){
+          fprintf(stderr,"Please enter only 1 path\n");
+          exit(-1);
+     }
+     
+     
+     char * path;
+     path = *(in_data + 1);
+     
+     DIR * directory;
+     directory =  opendir (path);
+     if ( directory == NULL){ fprintf(stderr, "Not a directory\n"); exit(-1);}
+     
+     
+     struct dirent * dir_entry;
+     struct stat file_stat;
+     char full_path [2048];
+     
+     int fd,ridden;
+     char buf[10];
+     
+     for(dir_entry = readdir(directory); 
+            dir_entry != NULL;              
+            dir_entry = readdir(directory)){
+         
+         strcpy (full_path,path);
+         strcat (full_path,"/");
+         strcat (full_path,dir_entry->d_name);
+         
+         if (stat (full_path,&file_stat) != 0 ) {fprintf(stderr, "Error retrieving file info\n"); exit(-1);}
+         
+         fprintf (stdout,"Name %20s",dir_entry->d_name);
+         fprintf (stdout," / ");
+         fprintf (stdout,"Inode %10d",file_stat.st_ino);
+         fprintf (stdout," / ");
+         fprintf (stdout,"Size %10d",file_stat.st_size);
+         fprintf (stdout," / ");
+         
+         if (S_ISREG (file_stat.st_mode)){
+               fprintf (stdout,"%23s","Regular File / ");
+               fd = open (full_path,O_RDONLY);
+               if (fd < 0){
+                fprintf(stderr,"Error reading file %s %d\n",dir_entry->d_name,errno);
+                exit(-1);
+               }
+               ridden = read (fd,buf,10);
+               buf[ridden] = 0;
+               fprintf (stdout,"%10s",buf);
+               
+               close (fd);
+         } else {
+               fprintf (stdout,"%23s","Not a Regular File / ");
+          
+         }
+         fprintf (stdout,"\n");
+            
+     }
+        
+     if (errno != 0){
+     fprintf(stderr, "Error reading in the directory\n"); exit(-1);
+     }
+     
+     
+     
+     return 0;
+}

5.list_file_directory/readme.txt

@@ -0,0 +1 @@
+il programma legge da liena di ocmando il percorso di una directory e fornisce in output statistiche relative ai file: nome,inode,grandezza in byte, check se il file e' regolare e in tal caso i primi 10 caratteri