From 94f5e0ba7ca7af260f4bf2d8c77b8e6f6f528b18 Mon Sep 17 00:00:00 2001
From: Erik Andersen
Date: Mon, 1 May 2000 19:10:52 +0000
Subject: Some accrued fixes/updates.     * cp/mv now accepts (and ignores) the
 -f flag, since it always 	does force anyway     * tail can now accept
 -<num> commands (e.g. -10) for better 	compatibility with the standard tail
 command     * added a simple id implementation; doesn't support supp. groups
 yet

---
 coreutils/tail.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'coreutils/tail.c')

diff --git a/coreutils/tail.c b/coreutils/tail.c
index 315eee1..321c5c4 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -368,8 +368,10 @@ extern int tail_main(int argc, char **argv)
 			case 'h':
 				usage(tail_usage);
 			default:
-				fprintf(stderr, "tail: invalid option -- %c\n", opt);
-				usage(tail_usage);
+				if ((n_units = atoi(&argv[i][1])) < 1) {
+					fprintf(stderr, "tail: invalid option -- %c\n", opt);
+					usage(tail_usage);
+				}
 			}
 		} else {
 			break;
-- 
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