Subject: How to search and replace text

If you are using pico and not emacs for text editing, you can't
do search and replace of text.  That's too bad, because it can
be quite handy.  So let me tell you how you can do it.  What
you do is save your file from pico, then use a search and replace
command in UNIX to perform the operation on an entire file, and
create a new file in the process.

Let's say your file is called 'file1' and you'd like to replace
all the 'a's in file1 with 'z's and write out the result in 'file2'.

You use the 'sed' command in UNIX to do it, as follows (don't type in the 
unix c-shell % prompt):

% sed 's/a/z/g' < file1 > file2

and you're done.   sed can do many other things -- the s/ means
search and replace, followed by the search text followed by the
replace text.  To make sure all the text is change, you add the 
g = global flag.

To change apples to oranges, you'd do

% sed 's/apples/oranges/g' < file1 > file2