Cleanup Script

Description

This Bash script is designed to clean up old log files, systemd journals, Docker resources, and temporary/session files on a Linux system. It can be configured via a .env file and supports automatic self-updates from a remote repository.

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Features

• Deletes old log files based on configurable retention time and patterns
• Cleans systemd journal logs
• Removes unused Docker images, containers, and volumes
• Cleans up session/temp files while retaining a specified number
• Supports configuration via .env file
• Automatically checks for script updates (can be disabled)

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Installation

Install the script using curl:

curl https://git.onesystems.ch/System-Tools/Cleanup/raw/branch/main/cleanup.sh | bash -s install

This will:

• Download the script to /opt/cleanup/cleanup.sh
• Set execute permissions
• Create a symlink in /etc/cron.daily to run daily

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Configuration

After the first run, a .env file will be created in the same directory. You can modify it to configure the script:

Example .env:

MONATE_ALT=3
LOG_PFADE=("/var/log" "/opt/ddd/log")
LOG_MUSTER=("*.gz" "*.log.[0-9]*" "*.log.[0-9]*.gz")

JOURNAL_BEREINIGEN=true
JOURNAL_MAX_ALT="3months"

DOCKER_BEREINIGEN=true

SESSION_PFADE=("/var/www/app/sessions" "/opt/tempfiles")
SESSION_DATEIEN_BEHALTEN=100
SESSION_MIN_ALT_TAGE=1

ONLINE_UPDATE=true

Variable Descriptions:

• MONATE_ALT: Log files older than this (in months) will be deleted
• LOG_PFADE: Paths to log directories
• LOG_MUSTER: File name patterns to match for deletion
• JOURNAL_BEREINIGEN: Whether to clean up systemd journal logs
• JOURNAL_MAX_ALT: Retention policy for journal logs (e.g. "3months")
• DOCKER_BEREINIGEN: Whether to clean up Docker resources
• SESSION_PFADE: Paths to session/temp directories
• SESSION_DATEIEN_BEHALTEN: Minimum number of session files to retain
• SESSION_MIN_ALT_TAGE: Minimum age (in days) for session files to be deleted
• ONLINE_UPDATE: Enables or disables automatic update checks

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Logging

• All actions are logged in /opt/cleanup/logs/cleanup-YYYYMMDD-HHMMSS.log
• Logs older than 7 days are automatically removed

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Manual Execution

You can run the script manually at any time:

/opt/cleanup/cleanup.sh

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Notes

• The script checks for updates from the GitLab repository and updates itself if a new version is available.
• You can disable this behavior by setting ONLINE_UPDATE=false in the .env file.

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License

MIT License – free for commercial and private use.