UNIX for Dummies Questions & Answers

can anyone point me towards a program to list what's installed on my sunOS box and their version numbers.

showrev and pkginfo would be good commands to start with.

thanks
that what i wanted, but i'm lost again?
i started by trying to update sendmail...
first i was going to set up BerkeleyDB and when
i tried to run make, i got: command not found.
installed pkg-get and went to install make
and i ran out of room.
when i df -ak i get:
Filesystem kbytes used avail capacity Mounted on
/proc 0 0 0 0% /proc
/dev/dsk/c0t3d0s0 38327 17850 16645 52% /
/dev/dsk/c0t3d0s6 712690 508098 133323 80% /usr
fd 0 0 0 0% /dev/fd
/dev/dsk/c0t3d0s4 192383 62219 110926 36% /var
/dev/dsk/c0t3d0s5 288215 166351 93043 65% /opt
/dev/dsk/c0t3d0s7 2818867 150072 2386909 6% /www
swap 83868 116 83752 1% /tmp
nfs:/opt/bin 3851817 3209828 256808 93% /opt/bin
nfs:/opt/sbin 3851817 3209828 256808 93% /opt/sbin
nfs:/opt/lib 3851817 3209828 256808 93% /opt/lib
nfs:/opt/etc 3851817 3209828 256808 93% /opt/etc
nfs:/opt/include 3851817 3209828 256808 93% /opt/include
nfs:/opt/man 3851817 3209828 256808 93% /opt/man
nfs:/opt/local 3851817 3209828 256808 93% /opt/remote
nfs:/opt/gcc 3851817 3209828 256808 93% /opt/gcc
nfs:/opt/gnu 3851817 3209828 256808 93% /opt/gnu
nfs:/opt/java 3851817 3209828 256808 93% /opt/java
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can i make links to other space(s) on other partitions ie.. /www