example: document -O

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/uclient-example.c b/uclient-example.c
index 1f5a82b72175b24ae9a89b2144ca88e51befbdcf..32fc314a5ceb011c41c28071f6805fb4899ab7d3 100644 (file)
--- a/uclient-example.c
+++ b/uclient-example.c
@@ -181,6 +181,7 @@ static int usage(const char *progname)
        fprintf(stderr,
                "Usage: %s [options] <URL>\n"
                "Options:\n"
+               "       -O <file>:                      Redirect output to file (use \"-\" for stdout)\n"
                "\n"
                "HTTPS options:\n"
                "       --ca-certificate=<cert>:        Load CA certificates from file <cert>\n"