Learn the Groovy command line -e option with 10 practical examples. Run Groovy scripts instantly without creating files. Tested on Groovy 5.x. “Why create a file when you can run it right from the command line?” Brian Kernighan, Unix Philosophy Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner | Reading Time: 10 minutes Sometimes you just want to test a quick idea – check a date format, do a math calculation, or parse a ... Read More