Please provide grep command for each bullet point

.txt Document

1. Using Regular expressions with 'grep' (use UMassWhois.txt as your input file): o Display all dates in the file. o Display all the words that are all-upper case (with spaces on both sides). o Display all domain extensions in the document (.edu or.EDU,.com or.COM, .biz or .BIZ,...). Display the matches and the line numbers. O Display all the numbers that have at least 2 digits and delimited by at least one space (e.g. the number 31 in NS31 does not fulfil the condition). O Display all root domain names (.e. the words that come right before the .com, .edu, .biz,... of a URL) Technical Contact: Michael Pacheco University of Massachusetts Dartmouth Computing & Information Technology Services 285 old Westport Road North Dartmouth, MA 02747-2300 US +1.5089106642 mike.p@umassd.edu Name Servers: NS31.CONSTELLIX.COM NS61. CONSTELLIX.NET NS2.UMASSD.EDU NS51.CONSTELLIX.NET NS11.CONSTELLIX.COM NS21.CONSTELLIX.COM NS41. CONSTELLIX.NET Domain record activated: 30-Nov-1990 Domain record last updated: 17-Apr-2020 Domain expires: 31-Jul-2022