How to alias bash scripts and execute from terminal?

You wrote a bash script and now you have to run it, but you don't know how.  Well this is an easy task. We can do this with just few terminal commands.

• First you need to make the file as an executable. Use chmod to do so. chmod changes the file mode bits of each fiven file according to the mode , which can be either symbolic or numbr.
  In your terminal type:  chmod +x filename.sh
• Now add an alias in the .bashrc file
  gedit .bashrc
   at the last line of file type this:
  alias filename ='filename.sh'
• Save and close the file 
• Type source ~/.bashrc  to apply the changes you made to this file
• Now open terminal and just type the alias you provided to your application. Now you need not create the directory path and execute again and again to run a specific file. Just use the alias.