grex:tldr:dd74f

The command "grex -r ${space_separated_strings}" is a command-line instruction that utilizes the "grex" tool with the "-r" option followed by a variable called "${space_separated_strings}".

Here's a breakdown of the command:

1. "grex": It refers to the "grex" tool or command, which is a command-line utility used to generate regular expressions automatically. It analyzes given input strings and constructs the most appropriate regex pattern that matches those strings.

2. "-r": This is an option or flag used with the "grex" command. In this case, the "-r" option indicates that the provided input will be treated as a regular expression pattern rather than literal strings. It instructs the "grex" tool to analyze and optimize the given pattern.

3. "${space_separated_strings}": This is a variable that should be replaced with the actual space-separated string values you want to generate a regular expression for. The term "${space_separated_strings}" is a placeholder indicating that the provided input should be multiple strings separated by spaces.

To use this command, you would replace "${space_separated_strings}" with your desired space-separated strings. For example, if you want to generate a regular expression for the strings "apple orange banana", the command would be:

grex -r apple orange banana

Or if you have a variable containing the space-separated strings, you would use:

grex -r "$space_separated_strings"

The output of the command will be the regular expression pattern that best matches the provided strings.