深く探求します：linuxの中でフォルダの下のすべてのファイルを巡回します。
Linux Cは、ディレクトリとそのサブディレクトリ
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/types.h>
using namespace std;
void listDir(char *path)
{
DIR *pDir ;
struct dirent *ent ;
int i=0 ;
char childpath[512];
pDir=opendir(path);
memset(childpath,0,sizeof(childpath));
while((ent=readdir(pDir))!=NULL)
{
if(ent->d_type & DT_DIR)
{
if(strcmp(ent->d_name,".")==0 || strcmp(ent->d_name,"..")==0)
continue;
sprintf(childpath,"%s/%s",path,ent->d_name);
printf("path:%s/n",childpath);
listDir(childpath);
}
else
{
cout<<ent->d_name<<endl;
}
}
}
int main(int argc,char *argv[])
{
listDir(argv[1]);
return 0;
}
struct dirent {
ino_t d_ino; /* inode number */
off_t d_off; /* offset to the next dirent */
unsigned short d_reclen; /* length of this record */
unsigned char d_type; /* type of file */
char d_name[256]; /* filename */
};
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
char filename[256][256];
int len = 0;
int trave_dir(char* path, int depth)
{
DIR *d; //
struct dirent *file; //readdir
struct stat sb;
if(!(d = opendir(path)))
{
printf("error opendir %s!!!
",path);
return -1;
}
while((file = readdir(d)) != NULL)
{
// .， .. ，
if(strncmp(file->d_name, ".", 1) == 0)
continue;
strcpy(filename[len++], file->d_name); //
// ， ， ， ，
if(stat(file->d_name, &sb) >= 0 && S_ISDIR(sb.st_mode) && depth <= 3)
{
trave_dir(file->d_name, depth + 1);
}
}
closedir(d);
return 0;
}
int main()
{
int depth = 1;
int i;
trave_dir("/usr/keygoe/ini/", depth);
for(i = 0; i < len; i++)
{
printf("%s\t", filename[i]);
}
printf("
");
return 0;
}
#include <stdio.h>
#include <dirent.h>
#include <sys/stat.h>
void List(char *path)
{
struct dirent* ent = NULL;
DIR *pDir;
pDir=opendir(path);
while (NULL != (ent=readdir(pDir)))
{
if (ent->d_reclen==24)
{
if (ent->d_type==8)
{
printf(" :%s
", ent->d_name);
}
else
{
printf(" ：%s
",ent->d_name);
List(ent->d_name);
printf(" %s
",ent->d_name);
}
}
}
}
int main(int argc, char *argv[])
{
List(argv[1]);
return 0;
}
void List(char *path)
{
printf(" [%s]
", path);
struct dirent* ent = NULL;
DIR *pDir;
pDir=opendir(path);
//d_reclen：16 . ，24 ,28 ， ……
while (NULL != (ent=readdir(pDir)))
{
printf("reclen=%d type=%d\t", ent->d_reclen, ent->d_type);
if (ent->d_reclen==24)
{
//d_type：4 ，8
if (ent->d_type==8)
{
printf(" [%s]
", ent->d_name);
}
}
else if(ent->d_reclen==16)
{
printf("[.] [%s]
",ent->d_name);
}
else
{
printf(" [%s]
", ent->d_name);
}
}
}
#include <stdio.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
void dir_scan(char *path, char *file);
int count = 0;
int main(int argc, char *argv[])
{
struct stat s;
if(argc != 2){
printf("one direction requried
");
exit(1);
}
if(lstat(argv[1], &s) < 0){
printf("lstat error
");
exit(2);
}
//
if(!S_ISDIR(s.st_mode)){
printf("%s is not a direction name
", argv[1]);
exit(3);
}
dir_scan("", argv[1]);
printf("total: %d files
", count);
exit(0);
}
void dir_scan(char *path, char *file)
{
struct stat s;
DIR *dir;
struct dirent *dt;
char dirname[50];
memset(dirname, 0, 50*sizeof(char));
strcpy(dirname, path);
if(lstat(file, &s) < 0){
printf("lstat error
");
}
if(S_ISDIR(s.st_mode)){
strcpy(dirname+strlen(dirname), file);
strcpy(dirname+strlen(dirname), "/");
if((dir = opendir(file)) == NULL){
printf("opendir %s/%s error
");
exit(4);
}
if(chdir(file) < 0) {
printf("chdir error
");
exit(5);
}
while((dt = readdir(dir)) != NULL){
if(dt->d_name[0] == '.'){
continue;
}
dir_scan(dirname, dt->d_name);
}
if(chdir("..") < 0){
printf("chdir error
");
exit(6);
}
}else{
printf("%s%s
", dirname, file);
count++;
}
}
int main(int argc, char **argv)
{
DIR * pdir;
struct dirent * pdirent;
struct stat f_ftime;
int fcnt;/* */
pdir=opendir("./");
if(pdir==NULL)
{ return(-1); }
fcnt=0;
for(pdirent=readdir(pdir);pdirent!=NULL;pdirent=readdir(pdir))
{
if(strcmp(pdirent->d_name,".")==0||strcmp(pdirent->d_name,"..")==0) continue;
if(stat(pdirent->d_name,&f_ftime)!=0) return -1 ;
if(S_ISDIR(f_ftime.st_mode)) continue; /* */
fcnt++;
printf(" :%s
",pdirent->d_name);
}
printf(" %d
",fcnt);
closedir(pdir);
return 0;
}
#include <unistd.h>
#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include <sys/stat.h>
void printdir(char *dir, int depth)
{
DIR *dp;
struct dirent *entry;
struct stat statbuf;
if((dp = opendir(dir)) == NULL) {
fprintf(stderr, "cannot open directory: %s
", dir);
return;
}
chdir(dir);
while((entry = readdir(dp)) != NULL) {
lstat(entry-> d_name,&statbuf);
if(S_ISDIR(statbuf.st_mode)) {
/**//* Found a directory, but ignore . and .. */
if(strcmp( ". ",entry-> d_name) == 0 ||
strcmp( ".. ",entry-> d_name) == 0)
continue;
printf( "%*s%s/
",depth, " ",entry-> d_name);
/**//* Recurse at a new indent level */
printdir(entry-> d_name,depth+4);
}
else printf( "%*s%s
",depth, " ",entry-> d_name);
}
chdir( ".. ");
closedir(dp);
}
/**//* Now we move onto the main function. */
int main(int argc, char* argv[])
{
char *topdir, pwd[2]= ". ";
if (argc != 2)
topdir=pwd;
else
topdir=argv[1];
printf( "Directory scan of %s
",topdir);
printdir(topdir,0);
printf( "done.
");
exit(0);
}