[mike in ~]$ mkdir usr
[mike in ~]$ cd usr
[mike in ~/usr]$ mkdir share
[mike in ~/usr]$ mkdir local
[mike in ~/usr]$ mkdir man doc info
[mike in ~/usr]$ cd ..
[mike in ~]$ for dir in usr usr/local; do
...? ln -sv share/{man,doc,info} $dir
...? done
create symbolic link `usr/man' to `share/man'
ln: creating symbolic link `usr/man' to `share/man': File exists
create symbolic link `usr/doc' to `share/doc'
ln: creating symbolic link `usr/doc' to `share/doc': File exists
create symbolic link `usr/info' to `share/info'
ln: creating symbolic link `usr/info' to `share/info': File exists
create symbolic link `usr/local/man' to `share/man'
create symbolic link `usr/local/doc' to `share/doc'
create symbolic link `usr/local/info' to `share/info'
[mike in ~]$ ls -lR usr/
usr/:
total 40
drwxrwxr-x 2 mike mike 4096 Aug 11 18:52 doc
drwxrwxr-x 2 mike mike 4096 Aug 11 18:52 info
drwxrwxr-x 2 mike mike 4096 Aug 11 18:53 local
drwxrwxr-x 2 mike mike 4096 Aug 11 18:52 man
drwxrwxr-x 2 mike mike 4096 Aug 11 18:50 share

usr/doc:
total 0

usr/info:
total 0

usr/local:
total 12
lrwxrwxrwx 1 mike mike  9 Aug 11 18:53 doc -> share/doc
lrwxrwxrwx 1 mike mike 10 Aug 11 18:53 info -> share/info
lrwxrwxrwx 1 mike mike  9 Aug 11 18:53 man -> share/man

usr/man:
total 0

usr/share:
total 0