$ catman -wp
/shared/local/man: search the sections lexicographically
/shared/share/man: from man.cf, MANSECTS=1,1m,1c,1f,1s,1b,2,3,3c,3s,3x,3xc,3xn,3r,3t,3n,3m,3k,3g,3e,3b,9f,9s,9e,9,4,5,7,7d,7i,7m,7p,7fs,4b,6,l,n
/shared/opt/SUNWrtvc/man: search the sections lexicographically
...

mandir path = /shared/local/man
/usr/bin/sh /usr/lib/makewhatis /shared/local/man

mandir path = /shared/share/man
/usr/bin/sh /usr/lib/makewhatis /shared/share/man

...

$ catman -w

DESCRIPTION catman creates the preformatted versions of the on-line manual from the nroff(1) input files.

catman also creates the windex database file in  the  direc-
tories  specified by the MANPATH or the -M option.

-p   Print what would be done instead of doing it.

-w   Only  create  the  windex  database  that  is  used  by
     whatis(1)  and the man(1) -f and -k options.  No manual
     reformatting is done.