How to prepend spaces using sed command..?

Shell Programming and Scripting
1

hi all ,
i had the below sed command to append header at the starting of my output file ....

sed -i -e '1i saikumar   suresh    hemanth' output.txt

i want to append spaces to the Name saikumar how can i append with in this command ....?

2

Try e.g.

sed -e '1i\    saikumar   suresh    hemanth'