Linux

Users

Create new user

useradd \
    --gid 0 \
    --groups sudo,docker,users \
    --create-home \
    --shell /bin/bash \
    user

Create new user

useradd -g 0 -G sudo,docker,users -m -s /bin/bash user

Groups

List all groups

cat /etc/groups

Services

List all services

systemctl list-units --type=service --all

Port Usage

List ports with TCP listeners

sudo ss -tulpn

Flags explained

Flag	Description
-t	Show TCP sockets
-u	Show UDP sockets
-l	Show only listening sockets
-p	Show the process using each socket
-n	Show numeric addresses (no DNS)
-w	Show raw socket information (opt.)

Mounting Drives

How to mount samba shares on the Linux system

Home Assistant configuration files can be shared in the config folder share.

Example /etc/fstab entry

//homeassistant/config /home/docker/homeassistant cifs uid=1000,gid=1000,forceuid,forcegid,vers=3.0,credentials=/mnt/.smbcredentials

Synology - SMB Settings

CIFS Version

Synology only supports version 2.0

Example /etc/fstab entry

//JOHN-NAS/home/smarthome/homeassistant /home/docker/homeassistant_old cifs uid=1000,gid=1000,forceuid,forcegid,vers=2.0,credentials=/mnt/.nascredentials

Samba Share

How to share from the Linux system

apt update && apt install -y samba
nano /etc/samba/smb.conf

Example SMB config entry

[appdaemon]
path = /root/appdaemon
browseable = yes
read only = no
writable = yes
guest ok = yes

Create user for SMB

sudo useradd --groups sambashare smb

Set passwords

passwd smb
smbpasswd -a smb

Restart the services

systemctl restart smbd && systemctl restart smbd

Packages

Search installed packages

dpkg -l | grep <package-name>

List installed files

dpkg -L <package-name>

Cron

crontab guru

CIFS vs SAMBA, What are the differences ↩