In the data file employees dat we have employee records with the following fields of information (ID, FN, LN, D where ID: Employee identification number FN: Employee first name LN: Employee last name D: Department # Office number Write a shell script for processing employees.dat in such a way that we get the list of records (ID, FN, LN) and the total number of employees in the standard output as well as the file employees_by_office.dat that contains employee records with the following fields ol information # ID, FN I N D Records the file employees by ott ce dat must be sorted by the key # and lields are separated by the symbol In the data file employees dat we have employee records with the following fields of information (ID, FN, LN, D where ID: Employee identification number FN: Employee first name LN: Employee last name D: Department # Office number Write a shell script for processing employees.dat in such a way that we get the list of records (ID, FN, LN) and the total number of employees in the standard output as well as the file employees_by_office.dat that contains employee records with the following fields ol information # ID, FN I N D Records the file employees by ott ce dat must be sorted by the key # and lields are separated by the symbol