cat(1p): print errors to stderr
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								src/cat.c
									
									
									
									
									
								
							
							
						
						
									
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								src/cat.c
									
									
									
									
									
								
							@ -72,7 +72,7 @@ int main(int argc, char *argv[]) {
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				u = true;
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									u = true;
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				break;
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									break;
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			default:
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								default:
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				printf("Usage: %s (-u) file...\n", argv[0]);
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									fprintf(stderr, "Usage: %s (-u) file...\n", argv[0]);
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				return EX_USAGE;
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									return EX_USAGE;
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		}
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							}
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	}
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						}
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@ -102,22 +102,22 @@ int main(int argc, char *argv[]) {
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		} else if ((file = fopen(argv[i], "r")) == NULL) {
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							} else if ((file = fopen(argv[i], "r")) == NULL) {
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			switch (errno) {
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								switch (errno) {
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				case EACCES:
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									case EACCES:
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					printf("%s: %s: Permission denied.\n", argv[0], argv[i]);
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										fprintf(stderr, "%s: %s: Permission denied.\n", argv[0], argv[i]);
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					return EX_NOINPUT;
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										return EX_NOINPUT;
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				case EISDIR:
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									case EISDIR:
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					printf("%s: %s: Is a directory.\n", argv[0], argv[i]);
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										fprintf(stderr, "%s: %s: Is a directory.\n", argv[0], argv[i]);
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					return EX_NOINPUT;
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										return EX_NOINPUT;
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				case ELOOP:
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									case ELOOP:
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					printf("%s: %s: Is a symbolic link loop.\n", argv[0], argv[i]);
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										fprintf(stderr, "%s: %s: Is a symbolic link loop.\n", argv[0], argv[i]);
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					return EX_UNAVAILABLE;
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										return EX_UNAVAILABLE;
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				case EMFILE:
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									case EMFILE:
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					printf("%s: Internal error.\n", argv[0]);
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										fprintf(stderr, "%s: Internal error.\n", argv[0]);
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					return EX_SOFTWARE;
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										return EX_SOFTWARE;
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				case ENOENT: case ENOTDIR: case ENXIO:
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									case ENOENT: case ENOTDIR: case ENXIO:
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					printf("%s: %s: No such file or directory.\n", argv[0], argv[i]);
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										fprintf(stderr, "%s: %s: No such file or directory.\n", argv[0], argv[i]);
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					return EX_NOINPUT;
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										return EX_NOINPUT;
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				default:
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									default:
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					printf("%s: Unknown error.\n", argv[0]);
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										fprintf(stderr, "%s: Unknown error.\n", argv[0]);
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					return EX_UNAVAILABLE;
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										return EX_UNAVAILABLE;
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			}
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								}
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		}
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							}
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