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grex:tldr:cc4fc
The command "grex" is a tool for generating regular expressions based on input strings. It helps to quickly create regular expressions that match a set of given strings.
In this specific command, "grex -w ${space_separated_strings}", the "-w" option is used to generate a regular expression pattern for multiple space-separated strings.
The "${space_separated_strings}" is a placeholder that should be replaced with the actual space-separated strings you want to generate the regular expression for. For example, if you have the following strings: "hello world", "foo bar", and "test example", you would replace "${space_separated_strings}" with "hello world foo bar test example".
By executing this command, the "grex" tool will analyze the input strings and generate a regular expression pattern that can match those strings.