The Cron Parser

This is a simple little Ruby script that will accept a cron string, and then return a formatted output based on the provided string.

For example, given the following input:

*/15 0 1,15 * 1-5 /usr/bin/find

It will output the following:

Minute        0 15 30 45
Hour          0
Day of Month  1 15
Month         1 2 3 4 5 6 7 8 9 10 11 12
Day of Week   1 2 3 4 5
Command       /usr/bin/find

Usage

Pass the cron string as the first argument to the script:

$ ruby the_cron_parser.rb "*/15 0 1,15 * 1-5 /usr/bin/find"

Development

Install the version of Ruby as specified in the .ruby-version file.

Assuming you're on a completely fresh machine, you'll want to use some sort of Ruby version manager. rbenv is a great option, and you can find the installation instructions here: https://github.com/rbenv/rbenv?tab=readme-ov-file#installation

Once rbenv is installed, you can then use it to install the desired version of Ruby. At the time of writing this is 3.3.4:

$ rbenv install 3.3.4

Now install the impressively short list of dependencies:

$ bundle install

And finally, you can now run the tests with:

$ bin/rspec .