Sometimes Cisco syntax can be very long, thus there is more chances to make mistake typing them. By creating short aliases you are reducing mistake possibility.
I will create Cisco alias for show interface description. Go to global configuration mode and type following:
alias exec desc show interface description
Word desc is alias for show interface description syntax. By typing show aliases you will see alias you created. Several default aliases you can use without additional configuration (Slide 1).
Now you can type desc command in privilege mode. You will receive output of show interface description command (Slide 2.).
Use this tool to shorten any long syntax in order to minimize typing error possibility.
It is good practice to use alias for long and complex syntax. Of course use them in the first place for frequently used commands.
More about aliases read on this article.
I hope that this tutorial was informative to you and thank you for visiting this website.