List screen session easyly.

screen_session.sh

#!/bin/bash

# List existing screen sessions and assign numbers
sessions=($(screen -ls | grep -oP '^\s*\d+\.\S+'))
if [ ${#sessions[@]} -eq 0 ]; then
  echo "No screen sessions found."
  exit 1
fi

echo "Available screen sessions:"
for i in "${!sessions[@]}"; do
  echo "$((i+1)). ${sessions[$i]}"
done

# Prompt user to enter the session number
read -p "Enter the session number to attach: " session_number

# Validate the input is a number
if ! [[ "$session_number" =~ ^[0-9]+$ ]]; then
  echo "Invalid input. Please enter a valid session number."
  exit 1
fi

# Validate the session number is within the range
if ((session_number < 1 || session_number > ${#sessions[@]})); then
  echo "Invalid session number. Please select a number between 1 and ${#sessions[@]}."
  exit 1
fi

# Attach to the selected screen session
selected_session=${sessions[$((session_number-1))]}
screen -r "$selected_session"

# Check if the screen command was successful
if [ $? -ne 0 ]; then
  echo "Failed to attach to screen session $selected_session."
  exit 1
fi