再帰的に呼び出して、頭文字'_'のディレクトリのみを削除する。という要件があったのでメモ。

dirdel.c


# include <stdio.h>
# include <string.h>
# include <dirent.h>
# include <unistd.h>
# include <sys/stat.h>

int dirdel(char *path){

	DIR *dir;
	struct dirent *dp;
	struct stat statBuf;
	char childpath[512];
	int nret = 0;

		if (stat(path, &statBuf) == 0){
			if((dir=opendir(path))==NULL){
				perror("opendir");
				return -1;
			}

			for(dp=readdir(dir);dp!=NULL;dp=readdir(dir)){
				if(dp->d_name[0] != '.'){
					sprintf(childpath, "%s/%s", path, dp->d_name);
					nret = dirdel(childpath);
				}
				if(dp->d_name[0] == '_'){
					if(rmdir(childpath) == 0){
					}else{
						nret = -1;
					}
				}
			}
		}

	closedir(dir);

	return nret;
}

int main(argc,argv)
int   argc;
char  *argv[];
{
	char path[512];

	int nret = 0;
	
	if(argc<=1){
		strcpy(path,".");
	}
	else{
		strcpy(path,argv[1]);
    }
	
	nret = dirdel(path);
	return nret;
}