Once your script has execute privilege, thereafter you can run it like this:
% ./myscriptor if it is situated in directory /home/user1/dro/bin say
% /home/user1/dro/bin/myscriptwould execute your script. This is long-winded if you want to run the the script frequently. To omit the directory path you need to add the current (.) or better, the specific directory to your PATH environment variable.