Tiago Amaral actiago

Here are several different ways to test a TCP port without telnet.

BASH (man page)

$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C

$ cat &lt; /dev/tcp/127.0.0.1/23

	#!/bin/bash

	# Diretório de backup
	BACKUP_DIR="${HOME}/minikube_backup_$(date +%Y%m%d_%H%M%S)"
	mkdir -p "${BACKUP_DIR}"

	# Backup dos perfis do Minikube
	echo "Backup dos perfis do Minikube..."
	minikube profile list > "${BACKUP_DIR}/minikube_profiles.txt"

	#!/usr/bin/bash

	while read -r URL; do

	echo "Processando a url: $URL"
	openssl s_client -connect "$URL":443 </dev/null 2>/dev/null \| openssl x509 -noout -dates -issuer
	echo ""

	done < certificados.txt

	#!/usr/bin/env bash

	DOMAIN_LIST="google.com"

	echo "Expiration dates:"

	for domain in $DOMAIN_LIST
	do
	echo -n "$domain = "
	whois $domain \| grep 'expires' \| awk '{print $2}'

	# Set the API token and chat ID
	API_TOKEN="<your_api_token>"
	CHAT_ID="<your_chat_id>"

	# Set the message text
	MESSAGE="This is a test message"

	# Use the curl command to send the message
	curl -s -X POST https://api.telegram.org/bot$API_TOKEN/sendMessage -d chat_id=$CHAT_ID -d text="$MESSAGE"

	# Get interface ip addresses
	Get-NetIpAddress \| Select-Object InterfaceAlias,IPAddress,AddressFamily \| Format-Table

	# Get my public address

	nslookup myip.opendns.com resolver1.opendns.com

	#!/usr/bin/bash

	read -p "Digite a URL: " URL
	openssl s_client -connect "$URL":443 </dev/null 2>/dev/null \| openssl x509 -noout -dates

	snap disable firefox

	snap remove --purge firefox

	sudo apt remove --autoremove firefox

	sudo add-apt-repository ppa:mozillateam/ppa

	sudo nano /etc/apt/preferences.d/99mozillateamppa