ssh-util/connect-ec2 at master · lankesh/ssh-util · GitHub

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#!/bin/bash

export WORKING_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

source "$WORKING_DIR/common/common"

options_list=()
pem_files=()
for pem_file in $(ls "$WORKING_DIR/pem/" | sort -n)
do
    options_list+=($(get_option_name "$pem_file"))
    pem_files+=("$pem_file")
done
options_list+=("exit")

options_list_size=${#options_list[@]}

for (( i=0; i<$options_list_size; i+=3 ))
do
    idx=$(($i+1))
    idx_prefix=""
    if [ $idx -lt 10 ]
    then
        idx_prefix="0"
    fi
    if [ $i -le $(($options_list_size - 3)) ]
    then
        idx2=$(($idx+1))
        idx3=$(($idx+2))
        display_options "$idx_prefix$idx. ${options_list[$i]}" "$idx_prefix$idx2. ${options_list[$i+1]}" "$idx_prefix$idx3. ${options_list[$i+2]}"
    elif [ $i -le $(($options_list_size - 2)) ]
    then
        idx2=$(($idx+1))
        display_options "$idx_prefix$idx. ${options_list[$i]}" "$idx_prefix$idx2. ${options_list[$i+1]}"
    elif [ $i -le $(($options_list_size - 1)) ]
    then
        display_options "$idx_prefix$idx. ${options_list[$i]}"
    fi
done

read -p "Enter your choice [ 1 - $options_list_size ]: " choice

if [ -z "$choice" ] || ! [[ $choice =~ ^[0-9]+$ ]] || [ $choice -gt $options_list_size ]
then
    echo "Invalid choice. Please enter a number between 1 and $options_list_size."
    exit 1
fi

choice=$(echo $choice | sed 's/^0*//')

if [ "${options_list[$(($choice-1))]}" == "exit" ]
then
    exit 0
elif [[ " ${options_list[@]} " =~ " ${options_list[$(($choice-1))]} " ]]
then
    connect ${pem_files[$(($choice-1))]}
else
    echo "Invalid choice"
    exit 1
fi