My files from my home machine running Windows have a bunch of extra ^M
characters at the ends of the lines when I view them on Unix with
a Unix editor such as pico/vi/emacs. What can I do?

Answer:

There is a unix command, dos2unix, that will clean them up. Suppose
you downloaded Hw1.java from your home computer to your unix account
using FTP (see earlier faq). To convert it, on your unix account type,

dos2unix Hw1.java > temp

This will put the cleaned up version into the file named temp. The first
time you might want to check temp using the editor and make sure it looks
ok. Once you are sure temp has been cleaned up type:

mv temp Hw1.java

which will replace Hw1.java with temp (MoVe temp to Hw1.java). It will
probably ask you if you really want to replace the existing Hw1.java.
Answer yes.

You may also need to fix up the indentation. Sorry, no automatic program
for that. If you use emacs, open the file with emacs and then type the
following:

ctrl-x (
TAB
ctrl-n
ctrl-x )
Meta-100
ctrl-x e

This will fix up to 100 lines of your program. If your file is more
than 100 lines long then just repeat the last 2 lines (Meta-100, ctrl-X e).
Here is what's happing.

ctrl-x (       this begins the creation of a keyboard macro
TAB	       this is the tab key not TAB, it says indent one line
ctrl-n	       this moves to the next line
ctrl-x )       this ends the keyboard macro
Meta-100       this says do the next command 100 times
ctrl-x e       this says invoke the keyboard macro (which is done 100 times)

If you are new to emacs, remember ctrl-X means hold down the Ctrl key (like
a shift key) and press x. Meta-100 means hold down the Meta or Alt key (like
a shift key) and type 100 (hold down the Alt the entire time).

You should probably try this on a copy of your program the first time, in
case you goof it up.