Groovy Goodness: Using Groovy on the Command-Line

We can use Groovy on the command-line to evaluate one-line scripts and pipe output to other commands or use input from other commands. This makes for some command-line scripting. We invoke groovy with the -e argument to evaluate a simple script. We can even use arguments in the script. Other arguments are -n and -p to process each line of input from a file or from another command. We can also iter