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authorHans Petter Selasky <hselasky@FreeBSD.org>2021-10-16 08:39:18 +0000
committerHans Petter Selasky <hselasky@FreeBSD.org>2021-10-16 08:40:37 +0000
commitaa92785a5b76e02f3a9b95a2a90e73760f78698c (patch)
tree6cb6348c2b8fb86efe42a8339cba6bfcf7e71f63 /usr.sbin/mixer/mixer.c
parent899a3b38f5172d70360396caeebb5b694638282e (diff)
downloadsrc-aa92785a5b76e02f3a9b95a2a90e73760f78698c.tar.gz
src-aa92785a5b76e02f3a9b95a2a90e73760f78698c.zip
mixer(8): Add -h option to show usage.
Differential Revision: https://reviews.freebsd.org/D32508 Submitted by: christos@ Sponsored by: NVIDIA Networking
Diffstat (limited to 'usr.sbin/mixer/mixer.c')
-rw-r--r--usr.sbin/mixer/mixer.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/usr.sbin/mixer/mixer.c b/usr.sbin/mixer/mixer.c
index ba13291f7b36..b95b7502f3f4 100644
--- a/usr.sbin/mixer/mixer.c
+++ b/usr.sbin/mixer/mixer.c
@@ -65,7 +65,7 @@ main(int argc, char *argv[])
int aflag = 0, dflag = 0, oflag = 0, sflag = 0;
int ch;
- while ((ch = getopt(argc, argv, "ad:f:os")) != -1) {
+ while ((ch = getopt(argc, argv, "ad:f:hos")) != -1) {
switch (ch) {
case 'a':
aflag = 1;
@@ -85,6 +85,7 @@ main(int argc, char *argv[])
case 's':
sflag = 1;
break;
+ case 'h': /* FALLTROUGH */
case '?':
default:
usage();
@@ -175,7 +176,8 @@ static void __dead2
usage(void)
{
fprintf(stderr, "usage: %1$s [-f device] [-d unit] [-os] [dev[.control[=value]]] ...\n"
- " %1$s [-d unit] [-os] -a\n", getprogname());
+ " %1$s [-d unit] [-os] -a\n"
+ " %1$s -h\n", getprogname());
exit(1);
}