TLDR
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exrex

 
Generate all/random matching strings for a regular expression. It can also simplify regular expressions. More information: https://github.com/asciimoo/exrex.
 
  • Generate all possible strings that match a regular expression:
     
    exrex '{{regular_expression}}'
     
  • Generate a random string that matches a regular expression:
     
    exrex --random '{{regular_expression}}'
     
  • Generate at most 100 strings that match a regular expression:
     
    exrex --max-number {{100}} '{{regular_expression}}'
     
  • Generate all possible strings that match a regular expression, joined by a custom delimiter string:
     
    exrex --delimiter "{{, }}" '{{regular_expression}}'
     
  • Print count of all possible strings that match a regular expression:
     
    exrex --count '{{regular_expression}}'
     
  • Simplify a regular expression:
     
    exrex --simplify '{{ab|ac}}'
     
  • Print eyes:
     
    exrex '{{[oO0](_)[oO0]}}'
     
  • Print a boat:
     
    exrex '{{( {20}(\| *\\|-{22}|\|)|\.={50}| ( ){0,5}\\\.| {12}~{39})}}'

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