DEV Community: alfiosalanitri

Bash script to backup directories and mysql databases from source file to any location

alfiosalanitri — Sat, 19 Mar 2022 17:33:17 +0000

This script can create a tar archive of all directories listed inside a .txt file and
can exclude others directories from exclude.txt file.

Also it can backup all mysql databases in separated .sql files if backup-mysql script is installed.

The tar archive will be copied to any directory like usb device if there are available free space.

Download from github

Simple bash script to create a tar archive from custom source with optional encryption and files exclusion

alfiosalanitri — Wed, 27 Oct 2021 21:37:58 +0000

bash script to create compressed archive from source path to destination. Supports files and folders exclusions from txt file and optional encryption with password.

Download from github

How to Receive Telegram Alerts for High CPU and RAM Server Usage

alfiosalanitri — Mon, 25 Oct 2021 16:53:03 +0000

This is a simple bash script that monitor the server CPU (Load Average), RAM usage, check the systemctl services status and send an alert to telegram user if the RAM/CPU usage is greather then limit or a service is failed.

Requirements

A Server with systemd and root privileges
A bot telegram and a telegram user chat id

Installation
Clone this repo

Usage
Follow this steps

Bash script to count words and characters of multiple documents *.[txt|doc]

alfiosalanitri — Thu, 10 Jun 2021 18:00:41 +0000

a simple tool for people that need to count characters and words of multiple documents from command line interface.

Supports: *.txt and *.doc filetype

Prerequisites

a linux distro
sudo privileges
unzip package
catdoc package

Installation

download this script
open your CLI and type:

sudo mv linux_doc_words_counter /usr/local/bin
sudo chmod +x /usr/local/bin/linux_doc_words_counter

Usage

linux_doc_words_counter /path/to/archive.zip

Bash script to create/delete Apache Virtual Host automatically

alfiosalanitri — Sun, 06 Jun 2021 20:31:19 +0000

[update 06/01/2022]

The new script is compatible with Debian 11 or Ubuntu 20.
Also you can choose custom file directory or custom server aliases or install automatically Wordpress or Laravel application.
See demo here

With this bash script you can add/delete an apache virtual host to/from your lamp stack. You can also to add a database and choose one of yours fast-cgi php module if installed.

If you choose development environment option, the script will add the ssl certificate with mkcert package if installed on your machine. If you choose production environment, the script will add the ssl certificate with certbot and let's encrypt. Note that this last step requires the dns for domain and aliases setted to your server ip address.

Prerequisites

A debian linux distribution like Ubuntu or Debian
Stack Lamp: Apache, Mysql (optional), Php
php-fpm module (optional)
mkcert or certbot for SSL certificate (optional)

Installation

download this script
open your CLI and type:

sudo mv lamp_virtual_host /usr/local/bin
sudo chmod +x /usr/local/bin/lamp_virtual_host

Usage

cd /path/to/directory/websites/
lamp_virtual_host www.example.local/ lamp_virtual_host /path/to/example.com/ -a www.example.com,shop.example.com

and follow instructions.

Wireguard client connection/disconnection notification

alfiosalanitri — Sat, 05 Jun 2021 19:04:04 +0000

With this tutorial you can setup your server to send an alert to telegram when a client is connected or disconnected from the tunnel.

The script sends a message to telegram if the client hasn't activity with the server for x (15 default) minutes.

Prerequisites

Server with Wireguard and root privileges (read this post to install wireguard)
curl sudo apt install curl
Telegram Bot (how to create a bot)

Installation

download this script
Edit the file wg-clients-guardian.sh and change:

TIME_LIMIT=15 (alert will be sent after 15 minutes of inactivity)
TELEGRAM_CHAT_ID="your-chat-id"
TELEGRAM_BOT_ID="your-bot-api-key"

Add execution privilege to wg-clients-guardian.sh

sudo -s
chmod +x /path/to/wireguard-client-connection-notification/wg-clients-guardian.sh

create the cron job

* * * * * cd /path/to/wireguard-client-connection-notification/wg-clients-guardian.sh && /path/to/wireguard-client-connection-notification/wg-clients-guardian.sh > /dev/null 2>&1

Do you want to receive an email instead of a telegram notification?

Change this lines: 98,99

MESSAGE="🐉 Wireguard: \`$CLIENT_NAME $SEND_NOTIFICATION from $REMOTE_IP\`"
        curl -s -X POST "https://api.telegram.org/bot${TELEGRAM_BOT_ID}/sendMessage" -F chat_id=$TELEGRAM_CHAT_ID -F text="$MESSAGE" -F parse_mode="MarkdownV2" > /dev/null 2>&1

whit

MESSAGE="Wireguard: $CLIENT_NAME $SEND_NOTIFICATION from $REMOTE_IP"
echo "$MESSAGE" | mail -s subject your@email.com

Note: requires mail package sudo apt install mail