for h in $(seq $(history | tail -1 | awk '{print $1-N}') $(history | tail -1 | awk '{print $1}') | tac); do history -d $h; done; history -d $(history | tail -1 | awk '{print $1}')
This works I have checked .
for h in $(seq $(history | tail -1 | awk '{print $1-N}') $(history | tail -1 | awk '{print $1}') | tac); do history -d $h; done; history -d $(history | tail -1 | awk '{print $1}')
If you want to delete 10 lines then just change the value of N to 10.
I think this is the correct and shortest one line code answer to the above query .
