Reference library

Automation & scripting

CLI tools, scheduled jobs, filesystem tasks, and glue scripts that save time.

4 matches

Generate Strong SSH Keys and Save Them Securely with Python

Generate a 4096-bit RSA SSH key pair using Python's cryptography library and save both private and public keys with restricted file permissions.

ssh key-generation cryptography

Python

import os
import stat
from pathlib import Path
from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.backends import default_backend

def generate_ssh_keypair(key_path: str = "id_rsa", passphrase: str = None):
    """Generate a 4096-…

36 0 Open

Automation & scripting easy

Mock systemctl Wrapper in Python for Service Testing

A Python class-based mock of systemctl that simulates start, stop, restart, and status operations for a service, useful for testing automation scripts.

systemctl mock automation

Python

import subprocess
import sys

class ServiceManager:
    def __init__(self, service_name):
        self.service_name = service_name
        self.status = "inactive"
    
    def start(self):
        self.status = "active"
        print(f"Starting {self.service_name}... OK")
    
    def stop(self):
        self.status …

14 0 Open

Automation & scripting easy

Restore sqlite from latest backup file in Python

This script finds the most recently modified backup file in a directory and restores it to the main database path, then verifies the restored data.

sqlite backup file-io

Python

import sqlite3
import glob
import os
import shutil

def restore_latest_backup(db_path, backup_dir):
    backups = sorted(glob.glob(os.path.join(backup_dir, "*.db")), key=os.path.getmtime)
    if not backups:
        raise FileNotFoundError("No backup files found")
    latest = backups[-1]
    shutil.copy2(latest, db_p…

14 0 Open

Automation & scripting easy

Restrict Secrets File Permissions with the chmod Script in Python

This script restricts a secrets file to 0600 permissions, rotates it to a dated backup, and creates a fresh protected file for secure automation workflows.

chmod permissions secrets

Python

import os
import sys
import stat
from pathlib import Path

def restrict_secrets_file(filepath: str) -> None:
    """Set restrictive permissions (0600) on a secrets file."""
    path = Path(filepath).expanduser()
    
    if not path.is_file():
        raise FileNotFoundError(f"Secrets file not found: {path}")
    
   …

13 0 Open

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