treecmp - recursively list differences in two directory trees
treecmp [-cv] olddir newdir
-c (changes) list the names of changed or new files
-v (verbose) list all directories processed
treecmp -v /usr/ast/V1 /usr/ast/V2
# Compare two trees
Treecmp recursively descends the directory tree of its second argument
and compares all files to those at the corresponding position in the
first argument. If the two trees are identical, i.e., all the
corresponding directories and files are the same, there is no output.
Otherwise, a list of files missing from one of the trees or present in
both but whose contents are not identical in both are printed. When the
-c flag is given, only files that are changed from the old version or are
new (i.e., absent in the old version) are listed.