chris@mimsy.UUCP (Chris Torek) (01/24/88)
(I overrode Rich's followup-to header, since there are buggy csh's out there.) In article <310@fig.bbn.com> rsalz@bbn.com (Rich Salz) writes: >The use of && and || in csh is the opposite of that in /bin/sh. > /bin/sh -c "/bin/test -d foo || mkdir foo" >Means if the foo directory doesn't exist, make it. ... > /bin/csh -c "/bin/test -d foo || mkdir foo" >will never make the directory, or mkdir will spit if it already exists. BUZZ! Sorry, contestant number 3. :-) Old versions of the C shell did indeed have this bug. It has been fixed for years. If your C shell does this, complain to your vendor (or upgrade from 3BSD!). I believe the documentation has always claimed that the C shell's `&&' and `||' constructs work in the same way as the Bourne shell's. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163) Domain: chris@mimsy.umd.edu Path: uunet!mimsy!chris