🚀 go-pugleaf

Here is a script, hopefully reproducible, demonstrating the problem I
recently described in a previous message.  Before trying it, execute
first the equivalent of (I'm using bash):

	cp() { /usr/local/gnubin/cp -i $*; }
	rm() { /usr/local/gnubin/rm -i $*; }

If I copy x3 over x1, x2 will be changed too (this is nice):

~) echo a > x1
~) ln x1 x2
~) echo b > x3
~) v x*
-rw-r-----   2 pinard   other           2 Jan  1 13:39 x1
-rw-r-----   2 pinard   other           2 Jan  1 13:39 x2
-rw-r-----   1 pinard   other           2 Jan  1 13:40 x3
~) cp -p x3 x1
/usr/local/gnubin/cp: overwrite `x1'? y
~) v x*
-rw-r-----   2 pinard   other           2 Jan  1 13:40 x1
-rw-r-----   2 pinard   other           2 Jan  1 13:40 x2
-rw-r-----   1 pinard   other           2 Jan  1 13:40 x3
~) cat x2
b


Clean up before retrying:

~) rm x*
/usr/local/gnubin/rm: remove `x1'? y
/usr/local/gnubin/rm: remove `x2'? y
/usr/local/gnubin/rm: remove `x3'? y


I have to revert to using -f for the following to work, the hardlink
relationship is broken.  Copying x3 over x1 does not change x2 (this
is sad):

~) echo a > x1
~) ln x1 x2
~) chmod 440 x1
~) echo b > x3
~) v x*
-r--r-----   2 pinard   other           2 Jan  1 13:41 x1
-r--r-----   2 pinard   other           2 Jan  1 13:41 x2
-rw-r-----   1 pinard   other           2 Jan  1 13:41 x3
~) cp -p x3 x1
/usr/local/gnubin/cp: overwrite `x1', overriding mode 0440? y
/usr/local/gnubin/cp: cannot create regular file `x1': Permission denied
~) cp -pf x3 x1
~) v x*
-rw-r-----   1 pinard   other           2 Jan  1 13:41 x1
-r--r-----   1 pinard   other           2 Jan  1 13:41 x2
-rw-r-----   1 pinard   other           2 Jan  1 13:41 x3
~) cat x2
a
~) cat x1
b
~) 

-- 
Franc,ois Pinard       ``Happy GNU Year!''      pinard@iro.umontreal.ca
(514) 588-4656                                   ...!uunet!iros1!pinard
About the League for Programming Freedom?  Email me or lpf@uunet.uu.net