Bash Expansion

Bash brace expansion "autofills" some commands for you.

Create Multiple files

touch file{1,2,3,4}.txt - Expands to:

 file1.txt
 file2.txt
 file3.txt
 file4.txt

So, we can use a comma to separate the stuff we want to expand. Can we do ranges, I don't want to type all that?

We sure can!!

touch file{1..6}.txt - Expands to:

 file1.txt
 file2.txt
 file3.txt
 file4.txt
 file5.txt
 file6.txt