• That Start Processes (in parallel)
  • That Have Expression Languages
  • That Use Regexes
  • That Receive Code Snippets (Remote Evaluation)
  • That Have Printf-Style Formatting
  • That Have Backslash Escaping
  • With Quoting/Escaping Algorithms
  • Arg Substitution
  • With Tabular Output
  • With File System Path Matching
  • That Format Binary Data
  • Misc Expression Languages
  • The Worst Offender
  • Families of Unix Tools
  • Misc Problems