add usage for batch to tc.

diff --git a/tc/tc.c b/tc/tc.c
index f00722566c512a0b781337ffd8453bac8902c905..793eab24a50ebdc191cc9ecf119aa7fe8fdc9131 100644 (file)
--- a/tc/tc.c
+++ b/tc/tc.c
@@ -180,6 +180,7 @@ noexist:
 static void usage(void)
 {
        fprintf(stderr, "Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }\n"
+                       "       tc [-force] -batch file\n"
                        "where  OBJECT := { qdisc | class | filter | action }\n"
                        "       OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -b[atch] [file] }\n");
 }