l13.1b

<B>Digital的Unix操作系统VAX 4.2源码</B>

#print
There is a file in this directory whose name begins
with 'z'. Do what it tells you to, then type "ready".
#create X1
#create X2
#create zip
Rename the file named "mary" to "joe".
#create joe
I am a file
#
rm -f mary
ls >X1
mv joe mary
#user
ls >X2
#cmp X1 X2
#log
#next
13.1c 5