Bash for loop with range {#..#}

The {#..#} generate a sequence of numbers or chars, similarly to range() in Python. If I execute the command echo {1..5} in the command line I have:

1 2 3 4 5 

Instead the following bash script doesn't work as expected.

for i in {1..3}; do echo "Iteration $i" done 

will print:

Iteration {1..3} 

Why?
*I could use seq but I read it's outdate ()

1 Answer

I've tried your code (copy paste into a terminal) and it produced a different result from what you posted:

for i in {1..3}; do echo "Iteration $i" done #---OUTPUT BELOW--- Iteration 1 Iteration 2 Iteration 3 

Im using Linux Mint 12 Lisa (derived from Ubuntu) with bash version 4.2.10(1)-release