Package Management

apt install [package] -y

• Auto-confirms installation
• Skips interactive prompts

apt update --fix-missing

• Updates with broken dependencies
• Attempts to repair package lists

apt upgrade --dry-run

• Simulates upgrade without changes
• Shows what would be upgraded

Advanced Options

dpkg -i [package.deb] --force-depends

• Installs ignoring dependencies
• Use with caution

apt-get autoremove --purge

• Removes unused packages completely
• Deletes configuration files

apt search [term] --names-only

• Searches only package names
• Excludes descriptions

Information & Verification

dpkg -l | grep [package]

• Lists installed packages matching term
• Shows version and status

apt show [package] --no-install-recommends

• Package details without suggestions
• Clean dependency info

apt list --upgradable

• Shows available package updates
• Current vs available versions

System Maintenance

apt clean && apt autoclean

• Cleans package cache completely
• Removes partial downloads

Example Usage

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# Safe system update
apt update && apt upgrade -y --dry-run
apt full-upgrade --autoremove

# Package investigation
dpkg -l | grep -i security
apt show firefox --installed