In this example, the file named “file1.txt” with be copied to a file named “file1.txt.bak” without having to type in the second file name.  This is done using brace expansion.

 In Terminal, enter the command below:

cp file1.txt{,.bak}


You should now have two files:

file1.txt

file1.txt.bak

Keith Mitnick

As Senior System Engineer & COO at HCS, Keith wears many hats. He is responsible for a myriad of duties at HCS. Keith is always willing to do the job at hand and is never afraid to get his hands dirty.

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