------------------------------------------------------------------------
looping
------------------------------------------------------------------------

In increasing sophistication and clarity:

for n in 1 2 3 4 5 6 7 8 9 10
do
 rm file$n
done

for n in {1..10}
do
  rm file$n
done

for n in $(seq 10)
do 
  rm file$n
done

for ((n=1; n<=10; n++))
do
  rm file$n
done

Use seq for floating point

$ seq 1 0.4 2 
1
1.4
1.8