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Using !$ command

I am using clear command and after that !$ then it clear the screen again. Again i use the !$ command then it provide help about clear command using man command.
what is doing !$ command, i can't understand. Plz help.
Oct 16 '10 #1
1 1600
ashitpro
542 Expert 512MB
it executes the last command you executed on the shell.
Oct 18 '10 #2

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