diff --git a/errno/GNUmakefile b/errno/GNUmakefile
new file mode 100644
index 0000000..2dfaf25
--- /dev/null
+++ b/errno/GNUmakefile
@@ -0,0 +1,8 @@
+include GNUmakerules
+
+all: errno
+
+errno:
+clean:
+	rm errno
+install: $(BINDIR)/errno
diff --git a/errno/errno.c b/errno/errno.c
new file mode 100644
index 0000000..ef09e34
--- /dev/null
+++ b/errno/errno.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+char *cmnd;
+
+void usage(void) {
+    fprintf(stderr, "Usage: %s errno ...\n", cmnd);
+    exit(1);
+}
+
+
+int main(int argc, char **argv) {
+    int i;
+
+    cmnd = argv[0];
+
+    if (argc <= 1) usage();
+
+    for (i = 1; i < argc; i++) {
+	int e = strtoul(argv[i], NULL, 0);
+
+	printf("%d\t%s\n", e, strerror(e));
+    }
+    return 0;
+}