/* ch06-sortdir.c --- Demonstrate scandir(), alphasort(). */ #include /* for printf() etc. */ #include /* for errno */ #include /* for system types */ #include /* for directory functions */ char *myname; int process(const char *dir); /* main --- loop over directory arguments */ int main(int argc, char **argv) { int i; int errs = 0; myname = argv[0]; if (argc == 1) errs = process("."); /* default to current directory */ else for (i = 1; i < argc; i++) errs += process(argv[i]); return (errs != 0); } /* nodots --- ignore dot files, for use by scandir() */ int nodots(const struct dirent *dp) { return (dp->d_name[0] != '.'); } /* * process --- do something with the directory, in this case, * print inode/name pairs on standard output. * Return 0 if all OK, 1 otherwise. */ int process(const char *dir) { DIR *dp; struct dirent **entries; int nents, i; nents = scandir(dir, & entries, nodots, alphasort); if (nents < 0) { fprintf(stderr, "%s: scandir failed: %s\n", myname, strerror(errno)); return 1; } for (i = 0; i < nents; i++) { printf("%8ld %s\n", entries[i]->d_ino, entries[i]->d_name); free(entries[i]); } free(entries); return 0; }
