Initial commit.

Can delete a sequence of files of directories in the command line, no
recursion yet.

Assumes remove(3) is fast and reasonable:

   unlink(); if (errno==EISDIR) rmdir();

.gitignore

@@ -0,0 +1 @@
+erm

Makefile

@@ -0,0 +1,3 @@
+.PHONY: all
+
+all: erm

erm.c

@@ -0,0 +1,56 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <stdnoreturn.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+noreturn void usage(int s)
+{
+	puts("erm [-reh] [files]");
+	exit(s);
+}
+
+int main(int argc, char **argv)
+{
+	bool recursive = false;
+	bool stop_at_error = true;
+
+	int opt;
+	while ((opt = getopt(argc, argv, "reh")) != -1) {
+		switch (opt) {
+			case 'r':
+				recursive = true;
+				break;
+			case 'e':
+				stop_at_error = false;
+				break;
+			case 'h':
+				usage(0);
+			default:
+				usage(1);
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	int rv = 0;
+	if (recursive) {
+		/* TODO: descend */
+	} else {
+		for (int i = 0; i < argc; i++) {
+			char *path = argv[i];
+			if (remove(path)) {
+				fprintf(stderr, "failed to remove '%s': %s\n", path, strerror(errno));
+				if (stop_at_error) {
+					return 1;
+				} else {
+					rv = 1;
+				}
+			}
+		}
+	}
+
+	return rv;
+}