create a password with a custom length in ruby

You can create a password with a custom length in Ruby using the SecureRandom module which provides a random_number method to generate a random number. You can generate a password string by selecting random characters from a pre-defined set of characters.

Here's an example code snippet to generate a password with a custom length:

main.rb
require 'securerandom'

def generate_password(length)
  chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
  password = ''
  length.times do
    password << chars[SecureRandom.random_number(chars.length)]
  end
  return password
end

# Generate a password with custom length of 10 characters
password = generate_password(10)
puts "Generated Password: #{password}"
386 chars
15 lines

In this example, we define a helper method generate_password that takes a single argument length which determines the length of the password we want to generate.

We define a string chars that contains all the characters from which we want to select characters randomly. In this example, we have included lowercase and uppercase alphabets and digits from 0 to 9.

Next, we create an empty string variable password which will hold our generated password.

We generate a random number between 0 and the length of chars - 1 using SecureRandom.random_number(chars.length) and select a character from chars at that index using the [] operator. We do this length number of times and append each selected character to the password variable.

Finally, we return the password variable as the generated password.

We can generate a password of any custom length by calling generate_password method and passing the desired length as an argument. For example, generate_password(15) will generate a password of length 15.