Finger with no arguments gives a list of all currently logged in users. Finger with an argument gives detailed info on that user. Finger can often be used on a remote user. When Where fielden j.a. Also notice that since the string internet is contained in the string internetmci, a match was generated.
Man pages are UNIX help pages.
Not that they are always understandable but they can be useful in using the options on a command. To use type mkdir followed by the name of the new directory mkdir images will create a new directory called images. More is handy command to look at the contents of a file. Hitting the return key will display the next line of text. Hitting the space bar will display the next page.