Common Mistakes for Homework 1:

Problem I:  Some people tried to do  touch \ -u, which  creates a file
named   u.  Notice  the space  in front  of the  dash.  The
file's name actually contains a space in this case, which is NOT what 
you want.

Problem II: When  trying to only list the  female children some people
did ls  C* J*  M* However, this  will include Carol.mom  and Mike.dad.
There is also  some incorrect use of brackets.  [Gr]* [Pe]* [Ro]* does
not look for files starting with Gr, Pe, and Ro.  Instead it looks for
files starting  with G, r, P,  e, R, or  o.  This will still  give the
correct output for the sons however  if you do a similar thing for the
girls it will again include Carol.mom and Mike.dad/

Problem III:  The main mistake was  forgetting to limit  the output to
only one line.  Only half the credit was taken off for this though.

Problem IV:  The most common mistake  was not stating why  cal gives a
strange  output  for  September  1752.   Half  credit  was  given  for
just explaining what cal does.

Problem V: Many people did not limit the depth of the tree which would
be displayed (the --max-depth option).   Half credit was taken off for
this.   Also  the  output  was  not  put  in  human  readable  format,
i.e.  1.4M.  If  you  do  a  man  du  the  list of  options
specifically states the  human readable option as   h.  Half
credit was taken off for missing this as well.