Limitations of cp and mv?

[Dan_Jacobson at ATT.COM]

>>>>> On Fri, 17 May 1991 12:54:35 GMT, urban at cbnewsl.att.com (john.urban) said:

john.urban> mv(1) has changed between 3.2 and 4.0.  Prior to 4.0, you
john.urban> could not even mv directories within a filesystem!

Well, you could rename directories:

ihlpz 15:18 1..mail> cd /tmp
ihlpz 15:19 1./tmp> mkdir a
ihlpz 15:19 1./tmp> mv a b
ihlpz 15:19 1./tmp> mv b /usr/tmp/b
mv: directory rename only
2ihlpz 15:19 1./tmp> uname -a
uts ihlpz 5.2.6b 5 5890