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Commands

  • Finding largest files on a Linux system 
    sudo find /home/ -type f -exec du -b {} + 2>/dev/null | sort -rh | head -20
 
sudo find /home/ -type f -exec du -b {} + 2>/dev/null | sort -rh | head -20 | awk '{print $2}' | xargs -d '\n' sudo rm -f # and delete them 
 
 
cargo install dua-cli
dust -x /
  • Ubuntu RDP Problem 
    #!/bin/bash
# =============================================================================
# Ultimate All-in-One xRDP Installer for Ubuntu 24.04 (GNOME/Wayland)
# → Removes broken repo version completely
# → Installs latest xRDP via c-nergy script in CUSTOM mode (-c) + sound (-s)
# → Fully working: clipboard, drives, sound, smooth performance, no black screen
# Tested and working perfectly on Ubuntu 24.04.3 as of Nov 29, 2025
# =============================================================================
 
set -e  # Exit on any error
 
echo "=== Stopping and completely removing any old/broken xRDP installation ==="
sudo systemctl stop xrdp xrdp-sesman 2>/dev/null || true
sudo apt purge -y xrdp xorgxrdp pipewire-module-xrdp libpipewire-0.3-modules-xrdp libxrdp* 2>/dev/null || true
sudo rm -rf /etc/xrdp /var/run/xrdp* /etc/polkit-1/localauthority/50-local.d/*xrdp* 2>/dev/null || true
sudo deluser xrdp ssl-cert 2>/dev/null || true
sudo apt autoremove -y
 
echo "=== Disabling built-in GNOME Remote Desktop (it conflicts) ==="
gsettings set org.gnome.desktop.remote-desktop.rdp enable false || true
systemctl --user stop gnome-remote-desktop.service 2>/dev/null || true
systemctl --user mask gnome-remote-desktop.service 2>/dev/null || true
 
echo "=== Downloading latest c-nergy xrdp-installer v1.5.5 (Oct 31 2025) ==="
wget -q --show-progress -O xrdp-installer-1.5.5.zip https://www.c-nergy.be/downloads/xRDP/xrdp-installer-1.5.5.zip
 
echo "=== Extracting ==="
unzip -o xrdp-installer-1.5.5.zip
 
echo "=== Making executable ==="
chmod +x xrdp-installer-1.5.5.sh
 
echo "=== Running installer in CUSTOM mode with sound redirection (-c -s) ==="
echo "   This will compile the absolute latest xrdp (0.10.x develop) – takes 5–10 min"
echo "   Automatically selecting Ubuntu GNOME (option 1) when asked"
 
# Auto-answer "1" for the desktop selection prompt (ubuntu = GNOME)
printf "1\n" | ./xrdp-installer-1.5.5.sh -c -s
 
echo "=== Enabling and starting xRDP service ==="
sudo systemctl enable --now xrdp
 
echo "=== Opening firewall port (if ufw is active) ==="
sudo ufw allow 3389/tcp 2>/dev/null || true
 
echo ""
echo "╔══════════════════════════════════════════════════════════════════════════╗"
echo "║                     INSTALLATION COMPLETED SUCCESSFULLY!                 ║"
echo "║                                                                          ║"
echo "║  → Reboot is HIGHLY recommended (required for sound to work perfectly)   ║"
echo "║      Run: sudo reboot                                                    ║"
echo "║                                                                          ║"
echo "║  → After reboot, connect from Windows RDP (mstsc) to this machine's IP   ║"
echo "║    You will get the blue xrdp login screen → use your Ubuntu username    ║"
echo "║    and password → full desktop with sound, clipboard, drives, etc.       ║"
echo "║                                                                          ║"
echo "║  This is the only setup that actually works reliably on Ubuntu 24.04     ║"
echo "╚══════════════════════════════════════════════════════════════════════════╝"
  • Server Fan 
    sudo nano Startup.sh 
 
#!/bin/bash
modprobe -r kvm_intel kvm
ipmitool -H 192.168.99.20 -U USERID -P PASSW0RD raw 0x3a 0x07 0x03 0x00 0x01
ipmitool -H 192.168.99.20 -U USERID -P PASSW0RD raw 0x3a 0x07 0x01 0x00 0x01
ipmitool -H 192.168.99.20 -U USERID -P PASSW0RD raw 0x3a 0x07 0x02 0x00 0x01
 
sudo chmod +x Startup.sh
sudo nano /etc/systemd/system/Startup.service
 
[Unit]
Description=Startup Script
After=network.target  
 
[Service]
ExecStart=/usr/local/bin/Startup.sh
Type=simple
User=root  
Restart=always  
    
[Install]
WantedBy=multi-user.target # Or default.target
 
sudo systemctl daemon-reload
sudo systemctl enable Startup.service
sudo systemctl start Startup.service
 
 
 
# Anotehr Way [Not reliable]
crontab -e
@reboot /path/to/your_script.sh
  • External Hard Drive Issues
    • Commands 
      sudo ntfsfix -d /dev/sdb1
  • Virtualbox
    • Nested VM grayed 
      VBoxManage list vms
VBoxManage modifyvm "Your_VM_Name" --nested-hw-virt on
  • Logging 
    nano ~/.zshrc
 
# Add this 
if [ -z "$SCRIPT_LOGGING" ]; then 
	export SCRIPT_LOGGING=1 
	LOG_DIR="$HOME/Terminal_logs" 
	mkdir -p "$LOG_DIR" 
	LOG_FILE="$LOG_DIR/session_$(date +%Y-%m-%d_%H-%M-%S).log" 
	echo "[*] Auto-logging session to: $LOG_FILE" 
	script -q -a -f "$LOG_FILE" 
	exit 
fi
 
source ~/.zshrc
  • Copy Large File 
    cat file.txt | xclip -selection clipboard
  • Open PDF
xdg-open sql.pdf
  • Last 24h edited files
find /etc -mtime -1 -type f
  • Tailscale
echo 'net.ipv4.ip_forward = 1' | sudo tee -a /etc/sysctl.d/99-tailscale.conf
echo 'net.ipv6.conf.all.forwarding = 1' | sudo tee -a /etc/sysctl.d/99-tailscale.conf
sudo sysctl -p /etc/sysctl.d/99-tailscale.conf
 
# server
sudo tailscale up --advertise-routes=10.1.92.0/22
 
# Clients
sudo tailscale up --accept-routes
  • Debian ISO CD fix 
    sed -i '/cdrom/ s/^/#/' /etc/apt/sources.list
  • Immutable 
    lsattr /etc/resolv.conf
chattr -i /etc/resolv.conf
  • Static IPs 
    ip a
ip link set eth0 up
ls /etc/netplan/
nano /etc/netplan/01-netcfg.yaml
 
network:
version: 2
renderer: networkd
ethernets:
eth0:
  dhcp4: no
  addresses:
    - 192.168.1.110/24
  routes:
    - to: default
      via: 192.168.1.1
  nameservers:
    addresses:
      - 8.8.8.8
      - 1.1.1.1
        
        
netplan apply
  • Zsdt 
    tar -I 'zstd -19 -T0' -cf compressed_archive.tar.zst /path/to/directory #Compress
tar -I zstd -xf compressed_archive.tar.zst #Decompress

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