# Usefull CMDs # Linux # Disk / Space CMD ## Disk / Space CMD Will give the usage of the user you are logged in as ```bash sudo du -h --max-depth=1 ``` [![image.png](https://bookstack.thecartwrights.nz/uploads/images/gallery/2024-03/scaled-1680-/image.png)](https://bookstack.thecartwrights.nz/uploads/images/gallery/2024-03/image.png) The `df` command primarily checks disk usage on a mounted filesystem. If you don't include a file name, the output shows the space available on all currently mounted filesystems. Disk space is shown in 1K blocks by default: ```bash df -h ``` [![image.png](https://bookstack.thecartwrights.nz/uploads/images/gallery/2024-03/scaled-1680-/Kcmimage.png)](https://bookstack.thecartwrights.nz/uploads/images/gallery/2024-03/Kcmimage.png) List All Block Devices in Linux lsblk ``` lsblk ``` [![image.png](https://bookstack.thecartwrights.nz/uploads/images/gallery/2024-03/scaled-1680-/zVQimage.png)](https://bookstack.thecartwrights.nz/uploads/images/gallery/2024-03/zVQimage.png) [![image.png](https://bookstack.thecartwrights.nz/uploads/images/gallery/2024-03/scaled-1680-/aXfimage.png)](https://bookstack.thecartwrights.nz/uploads/images/gallery/2024-03/aXfimage.png) # Mount network share ```bash sudo mount.cifs //192.168.1.252/5tb /5TB -o user=USER,pass=PASS ``` #### Install CIFS ```bash sudo apt install cifs-utils ``` --- ```powershell mount.cifs //192.168.1.251/hel /mnt/share/NAS/hydra -o user=USER,pass=PASS ``` # Vault 2 issues with Nginx Proxy not working Check logs in Portainer - bind port already used (80) ```bash lsof -i tcp:80 ``` This will show whats running on that port ```bash fuser -k 80/tcp ``` This should kill the process, but if not do the below (based on the COMMAND Name) ```bash systemctl stop haproxy ``` # 📂 Sharing a Folder on Debian Linux via Samba **Last Updated:** 2025-06-01 **Applies To:** Debian 10+, Ubuntu, other Debian-based distributions **Use Case:** Share a local folder over the network for access from Windows, macOS, or Linux machines. --- ### 🧰 Prerequisites - Debian-based Linux system - `sudo` privileges - Network connectivity to target devices --- ### 🔧 Step 1: Install Samba Update the system and install Samba: --- ### 📁 Step 2: Create a Shared Directory Choose or create the folder to share. Example: This creates a public share folder with loose permissions (for anonymous access). --- ### 🛠️ Step 3: Configure Samba Edit the Samba configuration file: Add the following to the bottom of the file: > 📌 *Tip:* `force user = nobody` ensures files are written as the `nobody` user, preventing permission issues. --- ### 🔄 Step 4: Restart Samba Services --- ### 🔥 Step 5: Open Firewall (If Enabled) For systems using `ufw` (Uncomplicated Firewall): Or manually: --- ### 🧪 Step 6: Access the Share From a Windows or Linux machine: - Open File Explorer or file manager. - Go to: `\\\PublicShare` You should see the shared folder contents. --- ### 🔐 Optional: Secure with Username/Password To restrict access: 1. Disable guest access: 2. Create a Samba user: 3. Restart Samba: You’ll now need a username/password to access the share. --- ### 🧹 Troubleshooting

Problem	Fix
Can't connect to share	Check firewall, Samba config syntax, and network IPs
Files not writable	Check folder permissions and `force user` setting
Authentication issues	Ensure Samba user exists and password is set via `smbpasswd`

--- ### 📎 Related - `/etc/samba/smb.conf`: Samba main configuration file - `sudo testparm`: Validates Samba config - `sudo smbstatus`: Shows active connections # 📚 Mounting a Network Share for Docker on Debian ## ### 🧭 Overview This guide shows how to mount a CIFS/SMB network share on a Debian-based system and use it as a volume in Docker Compose. Useful when your Docker container needs access to shared files hosted on another machine (e.g., a NAS, Windows PC, or another Linux box). --- ### 🛠️ Step 1: Install CIFS Utilities ``` sudo apt update sudo apt install cifs-utils ``` --- ### 📂 Step 2: Create a Mount Point ``` sudo mkdir -p /mnt/downloads ``` --- ### 🔐 Step 3: Mount the Share ``` sudo mount -t cifs //LORGAR/Downloads /mnt/downloads -o username=slitzer,password=blink182,vers=3.0 ``` **Replace:** - `//LORGAR/Downloads` — with the remote share path - `username` and `password` — with valid credentials - `vers=3.0` — adjust based on your SMB version (`2.0`, `3.1.1`, etc.) --- ### 💾 Optional: Persistent Mount via fstab Edit `/etc/fstab`: ``` //LORGAR/Downloads /mnt/downloads cifs username=slitzer,password=blink182,vers=3.0,uid=1000,gid=1000 0 0 ``` **Using a secure credentials file:** ``` # /root/.smbcredentials username=slitzer password=blink182 ``` Then in `/etc/fstab`: ``` //LORGAR/Downloads /mnt/downloads cifs credentials=/root/.smbcredentials,vers=3.0,uid=1000,gid=1000 0 0 ``` *Don't forget:* `chmod 600 /root/.smbcredentials` --- ### 🐳 Step 4: Use in Docker Compose Update your `docker-compose.yml`: ``` version: '3' services: myapp: image: myapp/image volumes: - /mnt/downloads:/app/shared ``` This maps the mounted network share inside the container. --- ### 🔍 Troubleshooting - Check if mounted: `mount | grep downloads` or `df -h` - Check permissions: `ls -la /mnt/downloads` - Logs: `dmesg`, `journalctl -xe` --- ### ✅ TL;DR ``` sudo apt install cifs-utils sudo mkdir -p /mnt/downloads sudo mount -t cifs //REMOTE_HOST/Share /mnt/downloads -o username=...,password=...,vers=3.0 ``` Then reference `/mnt/downloads` in your Docker volumes. --- **🧠 Pro Tip:** Avoid hardcoding passwords by using credential files, especially for systems in production. # PowerShell / CMD # Exchange Powershell CMDs ## **Step 1: Start PowerShell** Using any of these methods, or any other you may know of: WinKey + R (Run Dialog): powershell.exe Start Menu -> type 'Powershell', click it Navigate to C:\\Windows\\System32\\WindowsPowerShell\\V1.0\\powershell.exe ## **Step 2: (optional/dependent) Connect to the AD Sync Server** If you're running PowerShell on the Server where AD Connect is running, skip this step. In the command window run the following command, replacing \[SERVERNAME\] with the name of the server you need to connect to (you may not be able to do this is PSRemoting is not enabled on the remote server): ```powershell Enter-PSSession -ComputerName [SERVERNAME] ``` ## **Step 3: Import the ADSync Module** Run the following command: ```powershell Import-Module ADSync ``` ## **Step 4: Run the Sync Command** Run the following Command(s): For a Delta Sync (most common, and used for most situations): ```powershell Start-ADSyncSyncCycle -PolicyType Delta ``` For a Full Sync (only necessary in some situations): ```powershell Start-ADSyncSyncCycle -PolicyType Initial ``` ## **Step 5: (Optional/Dependent) Exit PSSession** If you used the Enter-PSSession command, you must exit the session or it will remain open even after terminating the PS Host. You can do so by simply using the command: Exit # Unlock Account unlock CMD account (codeblue) ```bash NET USER codeblue /ACTIVE:YES ``` # CMD - Free Diskspace Gives free diskspace, change drive letter as needed > powershell -command "(Get-PSDrive C).Free/1GB"