INFORMATION COMMANDS


history                     Lists the commands typed during the session.
Options:         -r displays the list in reverse.
hostname               Displays the computer’s or server’s name on the terminal.
who                           Displays who is on the system.
who am i                 Displays the invoking user.
wc                              Counts and displays the number of lines, words and characters of a file.
                                    Usage:                        wc [options] <filename>
Options:         -c count character only.
-l count lines only.
-w count words only.
date                           Exercise >> to be completed by students.
cal                              Exercise >> to be completed by students.
whatis                      Displays the command description.
Usage:            whatis <command>
whereis                    Exercise >> to be completed by students.
which                       Exercise >> to be completed by students.
apropos                   Exercise >> to be completed by students.
id                                Displays the user id and the group id of the invoking user.
tty                              Displays users terminal name.



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