Extends the functionality of the bitcoin-cli tool allowing to select multiple configurations with the first parameter and other extra cool funcs

bitcoin-cli wrapper

#!/bin/bash
# Description: Allows to switch between RPC
#              client configurations inside
#              ~/.bitcoin folder. If no
#              config found, takes default
# Usage:
# bitcoin-cli <node_config> [args]
#
# Passes ~/.bitcoin/<node_config>.conf as
# the configuration file to bitcoin-cli
# command
#
# Arguments:
# CONFIG: Name of the configuration file
CONFIG="$1"
# Constants:
# APP: Binary of real bitcoin-cli
APP="/usr/local/bin/bitcoin-cli"
# CONF_DIR: Directory where Bitcoin configs
#           are saved
CONF_DIR="$HOME/.bitcoin"
# 1. Check if passed config
opt_config=""
# No-config
if [[ ! -z "$1" ]]; then
	# Existing config
	config_file="$CONF_DIR/$1.conf"
	if [[ -f "$config_file" ]]; then
		opt_config="-conf=$1.conf"
		shift
	else
		# Configuration does not exist, taking defaults
		echo "Configuration $config_file does not exist"
		echo "Using default bitcoin.conf"
	fi
fi
# 2. Decode by tx id
if [[ "$1" == "decoderawtransaction" ]] && [[ ${#2} -eq 64 ]]; then
	raw_tx=$("$APP" $opt_config "getrawtransaction" "${2}")
	# Not found raw tx
	if [[ -z "$raw_tx" ]]; then
		echo "The tx was not found"
		exit
	else
		# Second parameter must be raw tx
		set -- "${@:1:1}" "$raw_tx" "${@:3}"
	fi
fi
# Call bitcoin-cli
"$APP" $opt_config "$@"