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deb11:setup [2023/04/20 22:02] – [System Startup] Bernard Condraudeb11:setup [2025/12/21 14:48] (current) – [Install and configure packages] Bernard Condrau
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 $ sudo apt install rename $ sudo apt install rename
 $ sudo apt install rsync $ sudo apt install rsync
 +$ sudo apt install hping3
 $ sudo apt install openjdk-17-jre openjdk-17-jdk</code> $ sudo apt install openjdk-17-jre openjdk-17-jdk</code>
   * Change visudo editor<code>$ sudo update-alternatives --config editor</code>   * Change visudo editor<code>$ sudo update-alternatives --config editor</code>
 +
 +===== Upgrade linux headers =====
 +  * Check remaining space on the boot partition with:<code>df -h | grep "^/dev/"</code>
 +  * Remove outdated kernel packages:<code>sudo apt-get autoremove</code>
 +  * First check your kernel version, so you won't delete the in-use kernel image, running:<code>uname -r</code>
 +  * Delete the kernels you don't want/need anymore by running this:<code>sudo apt-get remove linux-image-VERSION</code>
 +  * Update grub kernel list:<code>sudo update-grub</code>
  
 ===== System Startup ===== ===== System Startup =====