What is the use of !! command ? Can I use it with conjunction to some other string to complete a command ?
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 Q1. What is the use of !! command ? Can I use it with conjunction to some other string to complete a command ? Unix
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Ans. Its used to execute last command. Yes this can be used with other string to execute new command. For eg - if ls was the last command, We can execute !! -l for having the long listing.

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