Implement File Management Commands to accomplish the following tasks. a) Set the permissions on the file named Student to read/write for the owner and read for everyone else. b) Turn on a file's Setuid bit without changing (or knowing) the current permissions. c) List the contents of the current directory, sorting by modification time and listing the most recently modified file last. d) How to view the network routing table in Ubuntu Server. Implement three popular commands of routing table.