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SUGGESTED EXERCISES
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Login
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Give yourself a password
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Logout and login again
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Print a calendar for your birth-year
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Print a calendar for December 1995
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What day of the week were you born?
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How many days were in the month September 1752? Be sure to do this
one, it's fun.
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Try echoing some messages.
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Find out the time and date.
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Change the erase key to '='. Try hitting <del>. Change erase back to <del>
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Create a file containing a calendar. (Inspect it, using cat )
Add a line commenting on the calendar.
Inspect the file again.
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Create a file containing the calendar for the years 1985, 1986 and 1987
Inspect this file using 'more'.
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Mail a letter to your neighbor. Use the password file to get the
login name.
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Read your mail.
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Use grep to find your name in the /etc/passwd file.
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Find out who is on the system.
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Talk to your neighbor (by computer)
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Read up on cat. Use man to learn what all the different
flags to cat mean.
Try them.
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Use cat to create a file. Use cat to combine two files.
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Use apropos to see if there is any way to get phone information.
Try it.
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By now you have a few files. Try different ways of listing them.
(ls, ls -a, ls -l,ls [a-z]*, etc.
Try listing only some of them.
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Rename some of your files.
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Copy a file. Remove the old one. (Use ls to verify the copying
and the removal.)
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A.
Copy  /usr/local/skel/teach-vi to your directory.
(cp /usr/local/skel/teach-vi . )
The '.' IS part of the command.
Then use vi to edit teach-vi.  (vi teach-vi) Try the stuff in teach-vi.
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B. This is an alternative to A. (above)
Use vi to edit a file you've created.
Try the commands on the summary sheet.
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Use ex on any file. Try some of the powerful commands.
(E.g.  Try inserting a space before any character which is not a space.)
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Change into the parent directory of your "home". Look around. 
Do the same for /usr/bin.
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Create a directory. Copy some files into the new directory. Change to
the new directory. Create some files in there. Change back to your
home directory and try some different 'ls' commands.
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Try pwd in different directories.  Try cd and cd .. . Create and remove
a directory. Try putting a file into the directory first.
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Change the protection code so that your neighbor can read one of
your files. Do this inside a newly made directory.
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Use a pipe to write a one line command to find out if your
neighbor is logged on. This command shouild have only one line of output
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Use fmt from inside of vi.
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Use "head /etc/passwd > shortpw" to get part of the passwd file
into your own account. Use sort to sort shortpw in various ways.
(Note that the field separator is ":".
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Add a command or two to your .login file.
Add an alias to your .cshrc file. 
Login again and try them.
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Start editing a file. Use <ctrl/z> to stop it. Try some other commands.
Restart the editing job.
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Use some features of the history mechanism to repeat commands.
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Run and compile a fortran program.
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Make a small Makefile. Compile a fortran (or C or ...) program
using a Makefile.
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Combine head and tail using pipes to see the 10th 11th and 12th lines
of a file.
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Try the file command on various groups of files.
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How many files are in /usr/bin ?
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Print out the names of the five largest files in /etc