Unix for foreach loop with range and vector

To loop through values in unix or linux bash shell one can make use of the "for" loop.

Example: Specify range

for i in {1..24};
do
echo $i
done

One can also use C style for loops like

for ((i=1;i<=25;i++));
do
echo $i
done

It can be used like the perl's foreach loop by specifying an array. Note that range can also be descending. 

for i in {1..24} 25 50 {3..4} 100 150 {5..2} qw er st {a..z};
do
echo $i
done

You can also have strings and string range not just numbers.