This is a (very specific) tool for backing up and versioning crontabs on multiple machines. Run it as follows:
./crontab_backup.rb user@example.com other@example.com
It will create a directory under the current directory called "crontab_backups"; this will be populated with files named "user_at_example.com.crontab" and so forth. If this directory does nmot exist, it will be created, and a git repo initialized in it's place.
As always, suggestions and improvements are welcome.
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