Get a list linux of packages ( apt, dnf, yum ) and containers ( flatpak, snap ) that have packages available to be updated and save them to custom fields. Mainly used with NinjaRMM.

Get-PackageUpdates.sh

#!/usr/bin/env bash
# Licence: MIT or use how you like

# Description:
# This script is used to get a list of system packages that can be updated and save them to a Custom Field.
# It also gets a list of snaps and flatpaks that can be updated and saves them to a Custom Field.

# Create the following Script Variables:
#
# packagesCustomField as a text field
# containersCustomField as a text field

# Create two multi-line Custom Fields.
# Example:
#  - Packages
#  - Containers

# Supported package managers:
#   - dnf
#   - apt
#   - yum

# Supported container managers:
#   - flatpak
#   - snap

# Set the Custom Fields to use from the script variables or from the command line arguments
if [[ -n "$1" ]]; then
    packages_cf=$1
fi
if [[ -n "$2" ]]; then
    containers_cf=$2
fi
if [[ -n "${packagesCustomField}" && "${packagesCustomField}" != "null" ]]; then
    packages_cf="${packagesCustomField}"
fi
if [[ -n "${containersCustomField}" && "${containersCustomField}" != "null" ]]; then
    containers_cf="${containersCustomField}"
fi

# Function: SetCustomField
#
# Description:
# This function is used to set a custom field value.
#
# Parameters:
# - $1: The name of the custom field
# - $2: The value to set the custom field to
#
# Returns:
# - 0: Successfully set custom field
# - 1: Failed to set custom field
# - 2: NinjaRMM CLI not found or not executable
function SetCustomField() {
    if [ -f "/opt/NinjaRMMAgent/programdata/ninjarmm-cli" ] && [ -x "/path/to/file" ]; then
        if /opt/NinjaRMMAgent/programdata/ninjarmm-cli set "$1" "$2"; then
            # Successfully set custom field
            return 0
        else
            # Failed to set custom field
            return 1
        fi
    else
        # NinjaRMM CLI not found or not executable
        return 2
    fi
}

# List system packages that can be updated
if [ "$(command -v dnf)" ]; then
    # RPM-based distributions
    system_packages=$(dnf list upgrades)
    system_type="dnf"
elif [ "$(command -v apt)" ]; then
    # Debian-based distributions
    system_packages=$(apt list --upgradable)
    system_type="apt"
elif [ "$(command -v yum)" ]; then
    # Red Hat-based distributions
    system_packages=$(yum check-update)
    system_type="yum"
fi

echo ""
echo "System packages that could be updated via: ${system_type}"
echo ""
echo "${system_packages}"
echo ""

if [[ -n "${packages_cf}" ]]; then
    echo "Saving updatable packages to Custom Field: ${packages_cf}"
    if [[ $(SetCustomField "${packages_cf}" "${system_packages}") -eq 0 ]]; then
        echo "Saved updatable packages to Custom Field."
    else
        echo "Failed to save updatable packages to Custom Field."
    fi
fi

# List snaps and flatpaks that can be updated
if [ "$(command -v flatpak)" ]; then
    # Flatpak containers
    container_packages=$(flatpak remote-ls --updates)
    container_type="flatpak"
elif [ "$(command -v snap)" ]; then
    # Snap containers
    container_packages=$(snap refresh --list)
    container_type="snap"
fi

echo ""
echo "Container packages that could be updated via: ${container_type}"
echo ""
echo "${container_packages}"
echo ""

if [[ -n "${containers_cf}" ]]; then
    echo "Saving updatable packages to Custom Field: ${containers_cf}"
    if [[ $(SetCustomField "${containers_cf}" "${container_packages}") -eq 0 ]]; then
        echo "Saved updatable containers to Custom Field."
    else
        echo "Failed to save updatable containers to Custom Field."
    fi
fi