rmlist.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <errno.h>
   4
   5 static int usage(const char *argv0) {
   6         dprintf(2,
   7                 "usage: %s file\n\n"
   8                 "all filenames inside file will be deleted\n"
   9                 "filename may be '-' to indicate stdin\n", argv0);
  10         return 1;
  11 }
  12
  13 int main(int argc, char** argv) {
  14         if(argc != 2) return usage(argv[0]);
  15         char buf[2048];
  16         FILE *f;
  17         if(!strcmp(argv[1], "-")) f = stdin;
  18         else f = fopen(argv[1], "r");
  19         if(!f) {
  20                 perror("fopen");
  21                 return 1;
  22         }
  23         while(fgets(buf, sizeof buf, f)) {
  24                 char *p = strrchr(buf, '\n');
  25                 if(!p) {
  26                         dprintf(2, "error: line too long: %s\n", buf);
  27                         continue;
  28                 }
  29                 *p = 0;
  30                 if(remove(buf) != 0) {
  31                         dprintf(2, "error: %s (%s)\n", strerror(errno), buf);
  32                 } else {
  33                         printf("removed %s\n", buf);
  34                 }
  35         }
  36         if(f != stdin) fclose(f);
  37         return 0;
  38 }