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--- deb11:setup [2022/09/22 22:28] – [Install additional Apps] Bernard Condrau
+++ deb11:setup [2023/04/20 22:02] (current) – [System Startup] Bernard Condrau
@@ Line 16: / Line 16: @@
 root:x:0:0:root:/root:/sbin/nologin</code>
-===== Install and configure apps =====
+===== Install and configure packages =====
-  * Additional apps<code>$ sudo apt update
+  * Additional packages<code>$ sudo apt update
 $ sudo apt install vim
 $ sudo apt install zip
 $ sudo apt install rename
-$ sudo apt install rsync</code>
+$ sudo apt install rsync
+$ sudo apt install openjdk-17-jre openjdk-17-jdk</code>
   * Change visudo editor<code>$ sudo update-alternatives --config editor</code>
+===== System Startup =====
+Debian 11 uses Systemd, not SysV, that's why your commands in ''/etc/rc.local'' file would not run at system boot time. This guide explains how to enable ''/etc/rc.local'' script to run on system startup.
+  - Create a rc.local unit file, follow [[deb10:rclocal|Services - rc.local]]
+  - Create file rc.local in /etc with the following content:<code>vim /etc/rc.local
+#!/bin/sh -e
+#
+# rc.local
+#
+# This script is executed at the end of each multiuser runlevel.
+# Make sure that the script will "exit 0" on success or any other
+# value on error.
+#
+# In order to enable or disable this script just change the execution
+# bits.
+#
+# By default this script does nothing.
+exit 0</code>
+  - Add execute permissions and start daemon:<code>chmod +x /etc/rc.local
+systemctl daemon-reload
+systemctl start rc-local
+systemctl status rc-local
+● rc-local.service - /etc/rc.local Compatibility
+   Loaded: loaded (/lib/systemd/system/rc-local.service; static; vendor preset:
+  Drop-In: /lib/systemd/system/rc-local.service.d
+           └─debian.conf
+   Active: active (exited) since Sun 2019-05-05 10:55:29 +07; 11min ago
+  Process: 1443 ExecStart=/etc/rc.local start (code=exited, status=0/SUCCESS)
+    Tasks: 0 (limit: 4915)
+   CGroup: /system.slice/rc-local.service
+</code>
+  * [[https://www.linuxbabe.com/linux-server/how-to-enable-etcrc-local-with-systemd|How to Enable /etc/rc.local with Systemd]]
+  * [[https://stackoverflow.com/questions/44797694/where-is-rc-local-in-debian-9-debian-stretch|Where is rc.local in Debian 9 (Debian Stretch)]]
+===== System Shutdown =====
+  - Put a symbolic link to the script to be run at shutdown into /lib/systemd/system-shutdown
+  * [[https://unix.stackexchange.com/questions/347306/how-to-execute-scripts-in-usr-lib-systemd-system-shutdown-at-reboot-or-shutdow|How to execute scripts in /usr/lib/systemd/system-shutdown/ at reboot or shutdown?]]
+  * [[https://opensource.com/life/16/11/running-commands-shutdown-linux|How to run commands at shutdown on Linux]]

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