Trivial correction to the usage text.

    - Remove the parameter "get" as it is not implemented.
    - Add the parameter "replace".

tc/tc_class.c

@@ -29,7 +29,7 @@ static void usage(void);
 
 static void usage(void)
 {
-	fprintf(stderr, "Usage: tc class [ add | del | change | get ] dev STRING\n");
+	fprintf(stderr, "Usage: tc class [ add | del | change | replace ] dev STRING\n");
 	fprintf(stderr, "       [ classid CLASSID ] [ root | parent CLASSID ]\n");
 	fprintf(stderr, "       [ [ QDISC_KIND ] [ help | OPTIONS ] ]\n");
 	fprintf(stderr, "\n");

tc/tc_filter.c

@@ -32,7 +32,7 @@ static void usage(void);
 
 static void usage(void)
 {
-	fprintf(stderr, "Usage: tc filter [ add | del | change | get ] dev STRING\n");
+	fprintf(stderr, "Usage: tc filter [ add | del | change | replace ] dev STRING\n");
 	fprintf(stderr, "       [ pref PRIO ] [ protocol PROTO ]\n");
 	fprintf(stderr, "       [ estimator INTERVAL TIME_CONSTANT ]\n");
 	fprintf(stderr, "       [ root | classid CLASSID ] [ handle FILTERID ]\n");

tc/tc_qdisc.c

@@ -29,7 +29,7 @@ static int usage(void);
 
 static int usage(void)
 {
-	fprintf(stderr, "Usage: tc qdisc [ add | del | replace | change | get ] dev STRING\n");
+	fprintf(stderr, "Usage: tc qdisc [ add | del | replace | change ] dev STRING\n");
 	fprintf(stderr, "       [ handle QHANDLE ] [ root | ingress | parent CLASSID ]\n");
 	fprintf(stderr, "       [ estimator INTERVAL TIME_CONSTANT ]\n");
 	fprintf(stderr, "       [ [ QDISC_KIND ] [ help | OPTIONS ] ]\n");