Change calls to error_msg.* and strerror to use perror_msg.*.
diff --git a/coreutils/cut.c b/coreutils/cut.c
index 8b31996..62f9e87 100644
--- a/coreutils/cut.c
+++ b/coreutils/cut.c
@@ -234,7 +234,7 @@
 		for (i = optind; i < argc; i++) {
 			file = fopen(argv[i], "r");
 			if (file == NULL) {
-				error_msg("%s: %s\n", argv[i], strerror(errno));
+				perror_msg("%s", argv[i]);
 			} else {
 				cut_file(file);
 				fclose(file);