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[Discuss] Fun command line help


When you execute a command in your shell and it returns an error because 
you make a typo, you run this command and it looks at your history to 
find your last command, runs a bunch of rules to figure out what you 
meant, and submits the corrected line.? You can specify a parameter to 
run the fixed command without confirmation if you know it will do the 
right thing.? You can also make up your own rules for it.

The original article has other fun things like this and is worth a look.

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