1 files changed, 21 insertions, 0 deletions

diff --git a/include/usage.h b/include/usage.h
index bd78a5381..c8716d24d 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2266,6 +2266,27 @@
   #define USAGE_IPC_LOG(a)
 #endif
 
+#ifdef CONFIG_SYSCTL
+#define sysctl_trivial_usage \
+        "[OPTIONS]... [VALUE]...\n"
+#define sysctl_full_usage
+        "sysctl - configure kernel parameters at runtime\n\n" \
+        "Options:\n" \
+        "\t-n\tUse this option to disable printing of the key name when printing values.\n" \
+        "\t-e\tUse this option to ignore errors about unknown keys.\n" \
+        "\t-w\tUse this option when you want to change a sysctl setting.\n" \
+        "\t-p\tLoad in sysctl settings from the file specified or /etc/sysctl.conf if none given.\n" \
+        "\t-a\tDisplay all values currently available.\n" \
+        "\t-A\tDisplay all values currently available in table form."
+
+#define sysctl_example_usage
+        "sysctl [-n] [-e] variable ...\n" \
+        "sysctl [-n] [-e] -w variable=value ...\n" \
+        "sysctl [-n] [-e] -a\n" \
+        "sysctl [-n] [-e] -p <file>\t(default /etc/sysctl.conf)\n" \
+        "sysctl [-n] [-e] -A\n"
+#endif
+
 #define syslogd_trivial_usage \
         "[OPTION]..."
 #define syslogd_full_usage \