Unable to launch SPARK EXECUTORS & TASKS!

HI Please help me with the below error: I chosen executors and tasks but saying command not found.

$ spar-shell --master yarn-client --num-executors 5 --executor-tasks 3
bash: spar-shell: command not found…

Also tried

spar-shell --master yarn-client --num-executors 5 --total-executor-cores 4
bash: spar-shell: command not found…

Thanks

You need to be extremely careful with typing. Command is spark-shell not spar-shell.

Thank you sir, I figured out after a While, but was unable to delete it.