2.20: How can tell what shared libraries a binary is linked with?

Use "dump -H <execfilename>" and see if anything other than /unix is
listed in the loader section (at the bottom).  The first example is
/bin/sh (statically linked) and the second example is
/usr/local/bin/bash (shared).

INDEX  PATH                          BASE                MEMBER              
0      /usr/lib:/lib                                                         
1      /                             unix                                    

INDEX  PATH                          BASE                MEMBER              
0      ./lib/readline/:./lib/glob/:/usr/lib:/lib               
1                                    libc.a              shr.o               
2                                    libcurses.a         shr.o               

The freeware tool "ldd" lists all the shared libraries needed
by an executable, including those recursively included by other
shared libraries. See question 2.27 "Where can I find ldd for AIX?".