Using a variable in brace expansion range fed to a for loop

You should use a C-style for loop to accomplish this:

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

This avoids external commands and nasty eval statements.

bash for-loop brace-expansion

If you want to use braces, you could so something grim like this:

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

Summary: Bash is vile.

bash for-loop brace-expansion

You can use seq command:

for i in `seq 1 $1`

Or you can use the C-style for...loop:

for((i=1;i<=$1;i++))

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