Final answer:
In 2015, Shell Scripting Languages were among LinkedIn's top 25 hottest skills, reflecting their importance in automation and system management in tech industries.
Step-by-step explanation:
One of the top 25 hottest skills on LinkedIn in 2015 was Shell Scripting Languages. This skill was highly sought after due to the need for automation and effective system management across various tech-driven industries. The prowess in Shell Scripting Languages allows professionals to write scripts which can automate tasks, manipulate data, and perform administrative duties effectively on various operating systems such as Linux and Unix. As a result, proficiency in shell scripting was a valuable asset for those seeking careers in IT and various technology sectors.