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Linux Basic Guides

Setup sudo

Switch to root
Terminal window
```
su -
```
Install sudo
Terminal window
```
  apt install sudo
```
Add your user to the sudo group
Terminal window
```
  usermod -aG sudo <username>
```

Mount External USB Drive

Get your external USB drive information UUID
Terminal window
```
  lsblk -f
```
Add your external drive to /etc/fstab to mount it on boot
Terminal window
```
 nano /etc/fstab
```
Then add your drive like so: UUID=<UUID> <mount path> auto uid=1000,gid=1000,nosuid,nodev,nofail 0 0
Reboot

Setup Samba

Install samba
Terminal window
```
  apt install samba
```
Open /etc/samba/smb.conf
Terminal window
```
  sudo nano /etc/samba/smb.conf
```

Add a Share Definition then save and exit

[shareName]
comment = hello
path = /media/samba/share
browseable = yes
writable = yes
guest ok = yes
read only = no
users = <user>, <user>

Add a Samba user
Terminal window
```
  smbpasswd -a <username>
```
Restart samba
Terminal window
```
  sudo service smbd restart
```
Access the Share at //<your ip>/shareName

Create a systemd service

Create a systemd service

  nano /etc/systemd/system/<serviceName>.service

Edit the service with your desired settings

  [Unit]
  Description=<description>

  [Service]
  ExecStart=<path to executable>
  WorkingDirectory=<working directory path>
  Restart=always
  RestartSec=50s
  User=<username>
  After=<service name>
  Requires=<service name>

Reload daemon
Terminal window
```
  sudo systemctl daemon-reload
```

Enable and start the service

  sudo systemctl enable <serviceName>
  sudo systemctl start <serviceName>

Check service status
Terminal window
```
  sudo systemctl status <serviceName>
```
Stop the service
Terminal window
```
  sudo systemctl stop <serviceName>
```

List all services

  systemctl list-unit-files --type=service

Auto screen off

Open the GRUB configuration file
Terminal window
```
sudo nano /etc/default/grub
```
Edit the line that starts with GRUB_CMDLINE_LINUX_DEFAULT and add consoleblank=<seconds>
grub
```
GRUB_CMDLINE_LINUX_DEFAULT="quiet consoleblank=60"
```
Update GRUB
Terminal window
```
sudo update-grub
```
Reboot

Download and Install a Debian package

Download the package
Terminal window
```
  wget <url>
```
Install the package
Terminal window
```
  sudo dpkg -i <filename>
```
Remove the file you downloaded
Terminal window
```
  rm <filename>
```