Pass variables to Ruby script via command line

🖥️💎 How to Pass Variables to Ruby Script via Command Line 📨🔧

Are you tired of manually syncing hundreds of accounts using IMAP Sync in Ruby? 😫 Well, we have a solution for you! By passing variables via the command line, you can automate the entire process and save yourself a whole lot of time and effort. Let's dive into the details! 💪

🔹 The Problem: Our dear friend, let's call him Jon, has installed RubyInstaller on his Windows machine and is running a cool script called IMAP Sync. But here's the catch: Jon needs to sync countless accounts, and manually entering the variables for each one is driving him mad. 😵

🔹 The Solution: To pass variables to the Ruby script via the command line, we can utilize command line arguments. By doing so, Jon can easily automate the synchronization process and avoid the tedium of manual input. 🎉

Here's an example of how Jon can modify the script and use command line arguments:

1. Open the script in a text editor or IDE of your choice.

2. Locate the variable declarations section within the script, where the connection information is defined. It should look something like this:

SOURCE_NAME = 'username@example.com'
SOURCE_HOST = 'mail.example.com'
SOURCE_PORT = 143
SOURCE_SSL  = false
SOURCE_USER = 'username'
SOURCE_PASS = 'password'

DEST_NAME = 'username@gmail.com'
DEST_HOST = 'imap.gmail.com'
DEST_PORT = 993
DEST_SSL  = true
DEST_USER = 'username@gmail.com'
DEST_PASS = 'password'

1. Replace the hard-coded values with command line arguments. For example, Jon can modify the script like this:

SOURCE_NAME = ARGV[0]
SOURCE_HOST = ARGV[1]
SOURCE_PORT = ARGV[2].to_i
SOURCE_SSL  = ARGV[3] == 'true'
SOURCE_USER = ARGV[4]
SOURCE_PASS = ARGV[5]

DEST_NAME = ARGV[6]
DEST_HOST = ARGV[7]
DEST_PORT = ARGV[8].to_i
DEST_SSL  = ARGV[9] == 'true'
DEST_USER = ARGV[10]
DEST_PASS = ARGV[11]

1. Save the modified script.

Now, Jon can pass the variables when invoking the script from the command line like this:

ruby script.rb username@example.com mail.example.com 143 false username password username@gmail.com imap.gmail.com 993 true username@gmail.com password

Replace "script.rb" with the actual filename of your script. Make sure to pass the values in the correct order as specified by the modifications made in the script. 📝

Voilà! Jon can now automate the syncing process for multiple accounts by simply passing the required variables via the command line. 🚀

🔹 Call-to-Action: We hope this guide has helped you understand how to pass variables to a Ruby script via the command line. 🎯 Now it's your turn to dive in and start automating your own tasks with the power of command line arguments! Share your experiences, tips, or even scripts you've built in the comments below. Let's make automation cool again! 😎