Please show screenshots to show how it was done, for better understanding Please & Thankyou!

2. (20 pts) Write a simple single thread CSC4420 she.e., no concurrent commands, to support at least the following built-in commands: prompt can set to any string you input, in addition to the current history event number, ie, %h as in csh; o url: list the course web site o hour: list class times o room: list classroom location o desp: list the description of this course o text ist the textbook o ref: list the reference books o prof: list the professor's name o pol professor's office location o poh: professor's office hours o pma professor's email address o ta: list the TA's name o tol: TA's office location o toh: TA's office hours o tma : TA's email address o history: list history of events up to the number you set o help : list all the available commands o exit or quit: exit CSC4420 shell