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Ahhh, and of course: $ foo -h | grep bar The … … entire … … usage … … message! Never stop being you, Free Software, you lovable and quir

• RJIb8RBYxzAMX9u 5y ago
  I think this is because some tools print the usage message to stderr rather than stdout (ironically I couldn't find an example while typing up this reply). Try: $ foo -h 2>&1 | grep bar
  • gorgoiler 5y ago
    Thanks, but you’re explaining that my finger hurts because I hit it with a hammer when I’m complaining (in a kind hearted way, I hope!) that Free Software hammers have angled heads which skid off the nail sideways onto my finger. $ zfs -h | grep help (Edit: ah, not a very fair example, and a topical one too :)