diff --git a/Development/LinuxDrivers/README.md b/Development/LinuxDrivers/README.md
new file mode 100644
index 0000000..877a4b2
--- /dev/null
+++ b/Development/LinuxDrivers/README.md
@@ -0,0 +1,9 @@
+# Linux drivers
+
+- kernel: hardware-abstracting layer
+- uniform interface (API, system calls)
+
+```c
+#include <linux/module.h>
+#include <linux/init.h>
+```
diff --git a/Server/SSH/README.md b/Server/SSH/README.md
index d9b7502..fe34ff7 100644
--- a/Server/SSH/README.md
+++ b/Server/SSH/README.md
@@ -3,7 +3,7 @@
 ## Installation and setup
 
 - Install OpenSSH package (`sudo pacman -S openssh`) on client and server
-- On server, start ssh service with `sudo service enable sshd.service` and `sudo service start sshd.service`
+- On server, start ssh service with `sudo systemctl enable sshd.service` and `sudo systemctl start sshd.service`
 - Configuration file for ssh server is at `/etc/ssh/sshd_config`
 - Configuration file for ssh client is at `/etc/ssh/ssh_config`
 - More info at [archwiki](https://wiki.archlinux.org/title/OpenSSH)
@@ -60,4 +60,4 @@ Include /etc/ssh/sshd_config.d/*.conf
 
 ## SSH port forwarding
 
-- Complete this someday
\ No newline at end of file
+- Complete this someday