### Install OpenMediaVault Package

Source: https://docs.openmediavault.org/en/8.x/installation/on_debian.html

Install the openmediavault package using apt-get. This command sets environment variables for a non-interactive installation and updates the package list before installing.

```bash
export LANG=C.UTF-8
export DEBIAN_FRONTEND=noninteractive
export APT_LISTCHANGES_FRONTEND=none
apt-get update
apt-get --yes --auto-remove --show-upgraded     --allow-downgrades --allow-change-held-packages     --no-install-recommends     --option DPkg::Options::="--force-confdef"     --option DPkg::Options::="--force-confold"     install openmediavault

```

--------------------------------

### Install OpenMediaVault Keyring

Source: https://docs.openmediavault.org/en/8.x/installation/on_debian.html

Manually download and install the OpenMediaVault archive keyring for package verification.

```bash
apt-get install --yes gnupg
wget --quiet --output-document=- https://packages.openmediavault.org/public/archive.key | gpg --dearmor --yes --output "/usr/share/keyrings/openmediavault-archive-keyring.gpg"
```

--------------------------------

### Example: Customize Postfix main.cf

Source: https://docs.openmediavault.org/en/8.x/various/advset.html

An example demonstrating how to append custom network settings to the Postfix main configuration file using a SaltStack file.append state.

```yaml
customize_postfix_main:
  file.append:
    - name: "/etc/postfix/main.cf"
    - text: |
        mynetworks = 127.0.0.0/8 168.100.189.0/28

```

--------------------------------

### Example: Disable Zeroconf for ProFTPD

Source: https://docs.openmediavault.org/en/8.x/administration/general/network.html

A complete example showing how to disable Zeroconf for the ProFTPD service and apply the changes.

```bash
# omv-env set -- OMV_PROFTPD_ZEROCONF_ENABLED no
# omv-salt stage run prepare
# omv-salt deploy run avahi
```

--------------------------------

### Example Route Manifest Configuration

Source: https://docs.openmediavault.org/en/8.x/development/plugins.html

An example of a route manifest file, demonstrating how to specify a URL, title, notification title, and component for a new on-access scan page.

```yaml
version: "1.0"
type: route
data:
  url: "/services/clamav/onaccess-scans/create"
  title: _("Create")
  notificationTitle: _("Created on-access scan.")
  component: omv-services-clamav-onaccess-scan-form-page
```

--------------------------------

### Configure systemd-resolved

Source: https://docs.openmediavault.org/en/8.x/installation/on_debian.html

Install and configure systemd-resolved to ensure DNS functionality during the OpenMediaVault installation process.

```bash
apt-get install --yes systemd-resolved psmisc
systemctl enable --now systemd-resolved.service
systemctl restart systemd-resolved.service
resolvectl dns <INTERFACE> <DNS_SERVER_IP>
```

--------------------------------

### Troubleshoot GRUB Installation Error

Source: https://docs.openmediavault.org/en/8.x/installation/via_iso.html

Commands to execute within a chroot environment to fix GRUB installation issues during OpenMediaVault setup. Replace '/dev/sd[a-z]' with the target drive.

```bash
# Chroot.
chroot /target
# Replace [a-z] with the drive you want to install grub to.
# This is normally the drive you've selected to install OpenMediaVault on.
grub-install /dev/sd[a-z]
# Update GRUB.
update-grub
# Exit chroot.
exit
# Exit shell.
exit
```

--------------------------------

### Samba Share Configuration Example

Source: https://docs.openmediavault.org/en/8.x/administration/services/samba.html

An example of a default share configuration for 'MyDocuments'. This defines access controls, browsing, and file permissions for the share.

```ini
[MyDocuments]
path = /media//dev/disk/by-label/VOLUME1/Documents/
guest ok = no
read only = no
browseable = yes
inherit acls = yes
inherit permissions = no
ea support = no
store dos attributes = no
printable = no
create mask = 0755
force create mode = 0644
directory mask = 0755
force directory mode = 0755
hide dot files = yes
valid users = "john"
invalid users =
read list =
write list = "john"

```

--------------------------------

### Configure Database Nodes

Source: https://docs.openmediavault.org/en/8.x/development/tools/helper_functions.html

Example usage of configuration helper functions within a plugin post-installation script to add nodes and keys to the OMV database.

```bash
omv_config_add_node "/config/services" "${SERVICE_XPATH_NAME}"
omv_config_add_key "${SERVICE_XPATH}" "enable" "0"
omv_config_add_key "${SERVICE_XPATH}" "name" "MiniDLNA Server on OpenMediaVault"
omv_config_add_key "${SERVICE_XPATH}" "port" "8200"
omv_config_add_key "${SERVICE_XPATH}" "strict" "0"
omv_config_add_key "${SERVICE_XPATH}" "tivo" "0"
omv_config_add_key "${SERVICE_XPATH}" "rootcontainer" "."
omv_config_add_node "${SERVICE_XPATH}" "shares"
omv_config_add_key "${SERVICE_XPATH}" "loglevel" "error"
omv_config_add_key "${SERVICE_XPATH}" "extraoptions" ""
```

--------------------------------

### Log File Manifest Example

Source: https://docs.openmediavault.org/en/8.x/development/plugins.html

A manifest file example for configuring a log file in the system logs datatable, including ID, text, columns, and request details.

```yaml
version: "1.0"
type: log
data:
  id: clamav
  text: _("Antivirus")
  columns:
  - name: _("Date & Time")
    sortable: true
    prop: ts
    cellTemplateName: localeDateTime
    flexGrow: 1
  - name: _("Message")
    sortable: true
    prop: message
    flexGrow: 2
  request:
    service: LogFile
    method: getList
    params:
      id: clamav

```

--------------------------------

### POST /rpc.php (Get Settings)

Source: https://docs.openmediavault.org/en/8.x/development/howitworks.html

Retrieves configuration settings for a specific service from the backend.

```APIDOC
## POST /rpc.php

### Description
Retrieves the current configuration settings for a specified service.

### Method
POST

### Endpoint
/rpc.php

### Request Body
- **service** (string) - Required - The name of the service (e.g., "SMB")
- **method** (string) - Required - The method to execute (e.g., "getSettings")
- **params** (object) - Optional - Parameters for the method
- **options** (object) - Optional - Additional options

### Request Example
{
   "service":"SMB",
   "method":"getSettings",
   "params":null,
   "options":null
}

### Response
#### Success Response (200)
- **response** (object) - The configuration settings object
- **error** (null|string) - Error message if applicable

#### Response Example
{
  "response":{
     "enable":true,
     "workgroup":"HOME",
     "serverstring":"%h server",
     "loglevel":0
  },
  "error":null
}
```

--------------------------------

### Form Page Component Example

Source: https://docs.openmediavault.org/en/8.x/development/plugins.html

An example of a component manifest for a form page, detailing service requests, fields, and button actions.

```yaml
version: "1.0"
type: component
data:
  name: omv-services-clamav-onaccess-scan-form-page
  type: formPage
  config:
    request:
      service: ClamAV
      get:
        method: getOnAccessPath
        params:
          uuid: "{{ _routeParams.uuid }}"
      post:
        method: setOnAccessPath
    fields:
      - type: confObjUuid
      - type: checkbox
        name: enable
        label: _("Enabled")
        value: false
      - type: sharedFolderSelect
        name: sharedfolderref
        label: _("Shared folder")
        hint: _("The location of the files to scan on-access.")
        validators:
          required: true
    buttons:
      - template: submit
        execute:
          type: url
          url: "/services/clamav/onaccess-scans"
      - template: cancel
        execute:
          type: url
          url: "/services/clamav/onaccess-scans"

```

--------------------------------

### List all environment variables

Source: https://docs.openmediavault.org/en/8.x/various/advset.html

Use this command to get a list of all available environment variables that can be configured.

```bash
# omv-env list

```

--------------------------------

### User Import CSV Example

Source: https://docs.openmediavault.org/en/8.x/administration/users.html

Example CSV data format for importing multiple users. Fields include name, UID, tags, email, password, shell, groups, and account modification status. Ensure UID is numeric and within the 1000-60000 range.

```csv
# <name>;<uid>;<tags>;<email>;<password>;<shell>;<group,group,...>;<disallowusermod>
user1;1001;user1;user1@myserver.com;password1;/bin/bash;sudo;1
user2;1002;user2;user2@my.com;password2;/bin/sh;;0
user3;1003;user3;user3@example.com;password3;/bin/false;;1
user4;1004;user4;user4@test.com;password4;;;1

```

--------------------------------

### Navigation Item Manifest Example

Source: https://docs.openmediavault.org/en/8.x/development/plugins.html

Shows how to define a navigation item for the left-side menu, including path, text, position, icon, and URL.

```yaml
version: "1.0"
type: navigation-item
data:
  path: "services.clamav.onaccess-scans"
  text: _("On Access Scans")
  position: 20
  icon: "mdi:file-eye"
  url: "/services/clamav/onaccess-scans"

```

--------------------------------

### RFC 4716 Public Key Example

Source: https://docs.openmediavault.org/en/8.x/administration/services/ssh.html

Example of a public key formatted in the RFC 4716 standard.

```text
---- BEGIN SSH2 PUBLIC KEY ----
Comment: "iPhone user1"
AAAAB3NzaC1yc2EAAAADAQABAAABAQDfSQulxffUktx2P6EikkjVxDw0tT8nCW8LHLx/kl
8t37xFQ5/OoL9m6rVzYy5CFGYt+l7DffWjL0Av7AqaM0ykZVmv2VEM6TmMo56LTlmyZdlz
X5+GEJgCQNtDxcIYAVuPXKpLtlB/uAGzwHdZWpAen+mHgWIi4va8N5QNn4rXpkREcvM1q4
snyAi+gyjAS2Dn4pm8zzrd9qQFnoRYzidbp5e2Rs3brOkwUco0ZkOME2Ff6SpLGaXz4DHH
qgdTqZwHaTXEwm6kDmglCQrauIPI/ggNqz9mVEspYkskR2PM4CAty8RkZD4MQe5K3EMAFR
aFobBSlhQ3ESCYWNXTS3bF
---- END SSH2 PUBLIC KEY ----
```

--------------------------------

### Manage Debian Packages via CLI

Source: https://docs.openmediavault.org/en/8.x/various/apt.html

Standard APT commands for installing, removing, and purging packages on the system.

```bash
$ apt-get install <packagename>
```

```bash
$ apt-get remove <packagename>
```

```bash
$ apt-get purge <packagename>
```

--------------------------------

### Standard C-style Control Structures

Source: https://docs.openmediavault.org/en/8.x/development/coding_guideline.html

Examples of common control structures including for, switch, if-else, and foreach loops.

```c
for (i = 0; i < 10; i++) {
    if (foo(i)) {
        bar();
    }
}
```

```c
switch (x) {
case 'a':
    ...
    break;
case "b":
    ...
    break;
default:
    ...
    break;
}
```

```c
if (a) {
    foo();
} else {
    bar();
}
```

```c
if (TRUE === $result)
    break;
```

```c
foreach ($output as $outputk => $outputv) {
    foo();
}
```

--------------------------------

### Dashboard Widget Manifest Example

Source: https://docs.openmediavault.org/en/8.x/development/plugins.html

Illustrates a manifest file for a dashboard widget, specifying ID, permissions, title, type, and chart configuration.

```yaml
version: "1.0"
type: dashboard-widget
data:
  id: 9984d6cc-741b-4fda-85bf-fc6471a61e97
  permissions:
    role:
      - admin
  title: _("CPU Usage")
  type: chart
  chart:
    type: gauge
    min: 0
    max: 100
    displayValue: true
    request:
      service: System
      method: getInformation
    label:
      formatter: template
      formatterConfig: "{{ value | tofixed(1) }}%"
    dataConfig:
      - label: Usage
        prop: cpuUsage
        backgroundColor: "#4cd964"

```

--------------------------------

### POST /rpc.php (Get Share List)

Source: https://docs.openmediavault.org/en/8.x/development/howitworks.html

Retrieves a paginated list of shares for a specific service.

```APIDOC
## POST /rpc.php

### Description
Retrieves a list of shares associated with a service, supporting pagination and sorting.

### Method
POST

### Endpoint
/rpc.php

### Request Body
- **service** (string) - Required - The name of the service (e.g., "SMB")
- **method** (string) - Required - The method to execute ("getShareList")
- **params** (object) - Required - Pagination and sorting parameters

### Request Example
{
   "service":"SMB",
   "method":"getShareList",
   "params":{
      "start":0,
      "limit":25,
      "sortfield":"sharedfoldername",
      "sortdir":"ASC"
   },
   "options":null
}

### Response
#### Success Response (200)
- **response** (object) - Contains total count and data array

#### Response Example
{
   "response":{
      "total":1,
      "data":[
         {
            "uuid":"9e4c8405-b01c-40b6-8c46-af6be17a1ff6",
            "sharedfoldername":"sf1"
         }
      ]
   },
   "error":null
}
```

--------------------------------

### Get all configured environment variables

Source: https://docs.openmediavault.org/en/8.x/various/advset.html

Retrieve a list of all environment variables that are currently set in the system.

```bash
# omv-env get

```

--------------------------------

### Block Comment for Output Parsing

Source: https://docs.openmediavault.org/en/8.x/development/coding_guideline.html

This example demonstrates using block comments to explain the parsing of output lines, followed by a foreach loop.

```php
// Parse output:
// shadow:x:42:openmediavault
// snmp:x:112:
// sambashare:x:113:
// openmediavault:x:999:
// nut:x:114:
foreach ($output as $outputv) {
    ...
}
```

--------------------------------

### Dirty Modules Configuration

Source: https://docs.openmediavault.org/en/8.x/development/howitworks.html

Example content of the dirtymodules.json file indicating which services require reconfiguration.

```json
[
    "samba",
    "zeroconf"
]
```

--------------------------------

### Modify Filesystem Mount Entry

Source: https://docs.openmediavault.org/en/8.x/various/fs_env_vars.html

Example of a filesystem entry in the configuration file and the corresponding options line modification.

```xml
<mntent>
  <uuid>f767ee54-eb3a-44c5-b159-1840a289c84b</uuid>
  <fsname>/dev/disk/by-label/VOLUME1</fsname>
  <dir>/srv/dev-disk-by-label-VOLUME1</dir>
  <type>ext4</type>
  <opts>defaults,nofail,user_xattr,noexec,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl</opts>
  <freq>0</freq>
  <passno>2</passno>
  <hidden>0</hidden>
</mntent>
```

```xml
<opts>defaults,nofail,user_xattr,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl</opts>
```

--------------------------------

### NFS Export Configuration

Source: https://docs.openmediavault.org/en/8.x/administration/services/nfs.html

Example entries for the /etc/exports file, including standard shares and the NFSv4 pseudo file system.

```text
/export/Shared_1 (fsid=1,rw,subtree_check,secure,root_squash)
/export/Videos 10.10.0.0/24 (fsid=2,rw,subtree_check,secure,nroot_squash)
/export (ro,fsid=0,root_squash,no_subtree_check,hide)
```

--------------------------------

### RSync Daemon Server Addresses

Source: https://docs.openmediavault.org/en/8.x/administration/services/rsync.html

Examples of how to specify remote RSync daemon server addresses for client jobs.

```shell
rsync://10.10.10.12/ModuleName
username@10.10.10.12::ModuleName
rsync://username@10.10.10.12:873/ModuleName
```

--------------------------------

### Get RAID Creation Candidates with omv-rpc and jq

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_rpc.html

This command retrieves potential block devices for RAID creation. The output is piped to `jq` for pretty-printing the JSON response. Requires 'admin' user privileges.

```bash
# omv-rpc -u admin 'RaidMgmt' 'getCandidates' | jq
```

--------------------------------

### Example Output of Shared Folder Path Retrieval

Source: https://docs.openmediavault.org/en/8.x/administration/storage/sharedfolders.html

This is the expected output when successfully retrieving the full path of a shared folder using the `omv_get_sharedfolder_path` helper function.

```shell
$ /srv/dev-disk-by-label-VOLUME1/data_general/videos

```

--------------------------------

### Assign FTP Access Privileges

Source: https://docs.openmediavault.org/en/8.x/administration/services/ftp.html

Define access permissions for directories within the FTP server. This example restricts access to 'OR omvUser' for all operations, denying others.

```apache
<Directory /Videos>
  <Limit ALL>
    AllowUser OR omvUser
    DenyAll
  </Limit>
  <Limit READ DIRS>
    AllowUser OR omvUser
    DenyAll
  </Limit>
</Directory>

```

--------------------------------

### OpenMediaVault Build Command

Source: https://docs.openmediavault.org/en/8.x/development/plugins.html

Command to build and apply the web interface configuration. Use 'all' for a full build or specific targets like 'route' or 'i18n'.

```bash
omv-mkworkbench COMMAND
```

--------------------------------

### Add OpenMediaVault Repository

Source: https://docs.openmediavault.org/en/8.x/installation/on_debian.html

Add the OpenMediaVault repository to your system's sources list. Ensure the GPG key is correctly set up.

```bash
deb [signed-by=/usr/share/keyrings/openmediavault-archive-keyring.gpg] https://downloads.sourceforge.net/project/openmediavault/packages synchrony partner
```

--------------------------------

### Add OpenMediaVault Repositories

Source: https://docs.openmediavault.org/en/8.x/installation/on_debian.html

Append the OpenMediaVault package repository configuration to the system sources list.

```bash
cat <<EOF >> /etc/apt/sources.list.d/openmediavault.list
deb [signed-by=/usr/share/keyrings/openmediavault-archive-keyring.gpg] https://packages.openmediavault.org/public synchrony main
# deb [signed-by=/usr/share/keyrings/openmediavault-archive-keyring.gpg] https://downloads.sourceforge.net/project/openmediavault/packages synchrony main
## Uncomment the following line to add software from the proposed repository.
# deb [signed-by=/usr/share/keyrings/openmediavault-archive-keyring.gpg] https://packages.openmediavault.org/public synchrony-proposed main
# deb [signed-by=/usr/share/keyrings/openmediavault-archive-keyring.gpg] https://downloads.sourceforge.net/project/openmediavault/packages synchrony-proposed main
## This software is not part of OpenMediaVault, but is offered by third-party
## developers as a service to OpenMediaVault users.
# deb [signed-by=/usr/share/keyrings/openmediavault-archive-keyring.gpg] https://packages.openmediavault.org/public synchrony partner
```

--------------------------------

### Populate OpenMediaVault Configuration Database

Source: https://docs.openmediavault.org/en/8.x/installation/on_debian.html

Populate the OpenMediaVault configuration database with existing system settings, such as network configuration from /etc/network/interfaces.

```bash
omv-confdbadm populate

```

--------------------------------

### Apply custom configuration changes

Source: https://docs.openmediavault.org/en/8.x/various/advset.html

After modifying environment variables, restart the openmediavault engine and run SaltStack stages to apply the changes.

```bash
# monit restart omv-engined
# omv-salt stage run prepare
# omv-salt stage run deploy

```

--------------------------------

### Run deployment stage

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_salt.html

Executes the deployment stage to apply all pending service configurations.

```bash
# omv-salt stage run deploy
```

--------------------------------

### PHP Constant Naming Convention

Source: https://docs.openmediavault.org/en/8.x/development/coding_guideline.html

Constants should start with OMV_ and be all uppercase.

```php
$OMV_DEFAULT_FILE = "/etc/default/openmediavault";
```

```php
$OMV_JSONSCHEMA_SORTFIELD = '"type":["string","null"]';
```

--------------------------------

### List available stages

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_salt.html

Displays predefined stages that bundle multiple configuration tasks.

```bash
# omv-salt stage list
```

--------------------------------

### Source Helper Functions

Source: https://docs.openmediavault.org/en/8.x/development/tools/helper_functions.html

Load the OpenMediaVault helper functions into the current shell session.

```bash
$ source /usr/share/openmediavault/scripts/helper-functions
```

--------------------------------

### Accessing the configuration database with nano

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_confdbadm.html

Manual editing of the configuration file is discouraged as it can lead to database corruption.

```bash
$ nano /etc/openmediavault/config.xml
```

--------------------------------

### Get a specific environment variable

Source: https://docs.openmediavault.org/en/8.x/various/advset.html

Fetch the value of a particular environment variable by specifying its name.

```bash
# omv-env get <VARIABLE_NAME>

```

--------------------------------

### Deploy Smartmontools Configuration

Source: https://docs.openmediavault.org/en/8.x/administration/storage/disks.html

This command deploys smartmontools configurations after manually editing the `/etc/openmediavault/config.xml` file to set advanced power management or other disk-related settings not available through the UI. Ensure you have made the necessary XML edits before running this command.

```bash
$ omv-salt deploy run smartmontools

```

--------------------------------

### Deploy fstab with omv-salt

Source: https://docs.openmediavault.org/en/8.x/administration/storage/filesystems.html

This command is used to write filesystem entries to `/etc/fstab` based on the configuration in `config.xml`. Entries managed by OpenMediaVault are identifiable by specific tags.

```bash
omv-salt deploy run fstab
```

--------------------------------

### SSH Remote Server Address

Source: https://docs.openmediavault.org/en/8.x/administration/services/rsync.html

Example of specifying a remote server address when using SSH for RSync transport.

```shell
username@10.10.0.12:/srv/dev-disk-by-label-VOLUME1/Documents
```

--------------------------------

### Edit OpenMediaVault Configuration

Source: https://docs.openmediavault.org/en/8.x/various/fs_env_vars.html

Command to open the internal configuration file for manual modification.

```bash
# nano /etc/openmediavault/config.xml
```

--------------------------------

### Configure Loadcpufreq Service

Source: https://docs.openmediavault.org/en/8.x/administration/general/powermanagement.html

Enables the loadcpufreq service via the default configuration file.

```bash
ENABLE="true"
```

--------------------------------

### List Supported Service Discovery Variables

Source: https://docs.openmediavault.org/en/8.x/administration/general/network.html

Command to retrieve a list of environment variables supported for controlling service advertisement via Zeroconf/mDNS.

```bash

```

--------------------------------

### Deploy custom SaltStack service configuration

Source: https://docs.openmediavault.org/en/8.x/various/advset.html

After defining custom Salt states, use this command to deploy the configuration changes for a specific service.

```bash
# omv-salt deploy run <SERVICE_NAME>

```

--------------------------------

### PHP Namespace and Class Declaration

Source: https://docs.openmediavault.org/en/8.x/development/coding_guideline.html

PHP classes must use the OMV namespace. This example shows a typical class declaration with a trait.

```php
namespace OMV\System;

/**
 * @ingroup api
 */
class Process {
        use \OMV\DebugTrait;
    ...

}
```

--------------------------------

### List available deployment states

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_salt.html

Displays all available deployment states managed by omv-salt.

```bash
# omv-salt deploy list
```

--------------------------------

### Inspect mntent entry in config.xml

Source: https://docs.openmediavault.org/en/8.x/administration/storage/filesystems.html

This XML structure represents a mounted filesystem entry in OpenMediaVault's configuration file. It contains essential details like UUID, device path, mount directory, filesystem type, and options.

```xml
<mntent>
        <uuid>f767ee54-eb3a-44c5-b159-1840a289c84b</uuid>
        <fsname>/dev/disk/by-label/VOLUME1</fsname>
        <dir>/srv/dev-disk-by-label-VOLUME1</dir>
        <type>ext4</type>
        <opts>defaults,nofail,user_xattr,aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl</opts>
        <freq>0</freq>
        <passno>2</passno>
        <hidden>0</hidden>
</mntent>
```

--------------------------------

### Enumerate Mounted Filesystems with omv-rpc

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_rpc.html

Use this command to retrieve a list of all mounted filesystems, including the root filesystem. Ensure you have the 'admin' user privileges.

```bash
# omv-rpc -u admin 'FileSystemMgmt' 'enumerateMountedFilesystems' '{"includeroot": true}'
```

--------------------------------

### Deploy Network Configuration with Salt

Source: https://docs.openmediavault.org/en/8.x/installation/on_debian.html

Re-deploy the network configuration using OpenMediaVault's salt integration. This command targets the systemd-networkd service.

```bash
omv-salt deploy run systemd-networkd

```

--------------------------------

### Define Filesystem Mount Options

Source: https://docs.openmediavault.org/en/8.x/various/fs_env_vars.html

Default environment variables for various filesystem types used during mount operations.

```bash
OMV_FSTAB_MNTOPS_EXT2="defaults,nofail,user_xattr"
OMV_FSTAB_MNTOPS_EXT3="defaults,nofail,user_xattr,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0"
OMV_FSTAB_MNTOPS_EXT4="defaults,nofail,user_xattr,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0"
OMV_FSTAB_MNTOPS_JFS="defaults,nofail,usrquota,grpquota"
OMV_FSTAB_MNTOPS_XFS="defaults,nofail,usrquota,grpquota"
OMV_FSTAB_MNTOPS_VFAT="defaults,nofail"
OMV_FSTAB_MNTOPS_NTFS="defaults,nofail"
OMV_FSTAB_MNTOPS_HFSPLUS="defaults,nofail,force"
OMV_FSTAB_MNTOPS_BTRFS="defaults,nofail"
OMV_FSTAB_MNTOPS_ISO9660="ro"
OMV_FSTAB_MNTOPS_UDF="ro"
```

--------------------------------

### Reading database values

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_confdbadm.html

Retrieve configuration data using a specific datamodel path.

```bash
# omv-confdbadm read --prettify conf.system.filesystem.mountpoint
```

--------------------------------

### Deploy specific states

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_salt.html

Applies configuration changes for one or more specified services.

```bash
# omv-salt deploy run <NAMES>...
# omv-salt deploy run avahi monit systemd
```

--------------------------------

### Deploy dirty states

Source: https://docs.openmediavault.org/en/8.x/development/tools/omv_salt.html

Applies only the configuration states currently marked as dirty.

```bash
# omv-salt deploy run –append-dirty
```

--------------------------------

### List environment variables

Source: https://docs.openmediavault.org/en/8.x/administration/general/network.html

Displays the current value of the ZEROCONF_ENABLED environment variable.

```bash
# omv-env list | grep ZEROCONF_ENABLED
```

--------------------------------

### SMB Settings RPC Response

Source: https://docs.openmediavault.org/en/8.x/development/howitworks.html

JSON response containing the current SMB configuration settings.

```json
{
  "response":{
     "enable":true,
     "workgroup":"HOME",
     "serverstring":"%h server",
     "loglevel":0,
     "usesendfile":true,
     "aio":true,
     "nullpasswords":false,
     "localmaster":false,
     "timeserver":false,
     "winssupport":false,
     "winsserver":"",
     "homesenable":false,
     "homesbrowseable":true,
     "extraoptions":""
  },
  "error":null
}
```

--------------------------------

### Burn ISO to USB with dd

Source: https://docs.openmediavault.org/en/8.x/installation/via_iso.html

Use the dd utility on Linux to write an ISO image to a USB drive. Ensure 'xxx.iso' is replaced with your ISO file and '/dev/sdX' with the correct USB device.

```bash
sudo dd if=xxx.iso of=/dev/sdX bs=4096
```

--------------------------------

### Doxygen Documentation Comment for getList with Parameters

Source: https://docs.openmediavault.org/en/8.x/development/coding_guideline.html

A Doxygen-style documentation comment for a PHP method that retrieves a list of objects, detailing input parameters and return structure.

```php
/**
 * Enumerate all disk devices on the system. The field \em hdparm will
 * be added to the hard disk objects if there exists additional hard
 * disk parameters (e.g. S.M.A.R.T. or AAM) that can be defined
 * individually per hard disk.
 * @param array data An array containing the following fields:
 *   \em start The index where to start.
 *   \em limit The number of objects to process.
 *   \em sortfield The name of the column used to sort.
 *   \em sortdir The sort direction, ASC or DESC.
 * @return array An array containing the requested objects. The field
 *   \em total contains the total number of objects, \em data contains
 *   the object array. An exception will be thrown in case of an error.
 */
public function getList($data) {
    ...
}
```

--------------------------------

### Zero Superblock for Disk Preparation

Source: https://docs.openmediavault.org/en/8.x/administration/storage/raid.html

Before adding a disk to an array or if it was previously used in an mdadm array, zero the superblock to ensure clean preparation. This is a crucial step for disk integrity.

```bash
mdadm --zero-superblock /dev/sdX

```

--------------------------------

### OpenMediaVault Cron Job Configuration File

Source: https://docs.openmediavault.org/en/8.x/administration/general/cron.html

This file, `/etc/cron.d/openmediavault-userdefined`, is automatically generated by openmediavault to manage user-defined cron jobs. Each line specifies the schedule, user, and command to execute.

```shell
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
# m h dom mon dow user    command
12 18 * * * root /var/lib/openmediavault/cron.d/userdefined-04dc9701-881f-4440-93e2-66c385df4068 | mail -E -s "Cron - Movies" -a "From: Cron Daemon <root>" root >/dev/null 2>&1
50 18 * * * root /var/lib/openmediavault/cron.d/userdefined-69a1cf21-3099-4d37-bb8f-df3fecfac988 >/dev/null 2>&1
@daily root /var/lib/openmediavault/cron.d/userdefined-f04f0bbb-03d3-4d45-9efb-e1e980cbbaf3 >/dev/null 2>&1

```

--------------------------------

### Configure CPU Frequency Scaling

Source: https://docs.openmediavault.org/en/8.x/administration/general/powermanagement.html

Defines the governor and speed limits for CPU frequency scaling on x86 architectures.

```bash
ENABLE="true"
GOVERNOR="conservative"
MAX_SPEED="0"
MIN_SPEED="0"
```

--------------------------------

### OpenMediaVault RSync Cron Job Configuration

Source: https://docs.openmediavault.org/en/8.x/administration/services/rsync.html

A sample auto-generated RSync job configuration file used by OpenMediaVault. This script handles the synchronization process, including SSH key management and error handling.

```shell
#!/bin/sh
# This configuration file is auto-generated.
# WARNING: Do not edit this file, your changes will be lost.
. /usr/share/openmediavault/scripts/helper-functions
cleanup() {
  omv_kill_children $$
  rm -f /var/run/rsync-05260f23-5098-4f07-9250-0b38b923ac7f
  exit
}
[ -e /var/run/rsync-05260f23-5098-4f07-9250-0b38b923ac7f ] && exit 1
if ! omv_is_mounted "/srv/dev-disk-by-label-VOLUME1/" ; then
    omv_error "Source storage device not mounted at </srv/dev-disk-by-label-VOLUME1/>!"
    exit 1
fi
trap cleanup 0 1 2 5 15
touch /var/run/rsync-05260f23-5098-4f07-9250-0b38b923ac7f
omv_log "Please wait, syncing </srv/dev-disk-by-label-VOLUME1/backupdir/> to <username@backupserver.com:/opt/backup> ...\n"
eval $(ssh-agent) >/dev/null
ssh-add /etc/ssh/openmediavault-484a6837-5170-468c-aa8f-0e3cb92a641e >/dev/null
rsync --verbose --log-file="/var/log/rsync.log" --rsh "ssh -p 22" --recursive --times --archive --perms '/srv/dev-disk-by-label-VOLUME1/backupdir/' 'username@backupserver.com:/opt/backup' & wait $!
omv_log "\nThe synchronisation has completed successfully."

```