05-11-2013
It would help if you tell what file systems are used on the source and destination machines, what Unix OS is used, and what method you plan to use to perform the copy.
In any case, "du" is the wrong tool to check the proper copy.
If you really want to make sure all the files are copied without any corruption, create a hash/checksum of every file on the source side and use it to check it is correct on the destination one for each file.
You would also need to make sure all (empty) directories are created and possibly decide what to do with files taht are neither plain files nor directories.
Finally, you might also want to check the permissions, owner/group, extended attributes and ACLs if any.
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LEARN ABOUT OPENSOLARIS
check-permissions
check-permissions(1M) System Administration Commands check-permissions(1M)
NAME
check-permissions - check permissions on mail rerouting files
SYNOPSIS
/usr/sbin/check-permissions [login]
DESCRIPTION
The check-permissions script is intended as a migration aid for sendmail(1M). It checks the /etc/mail/sendmail.cf file for all configured
alias files, and checks the alias files for :include: files. It also checks for certain .forward files. For each file that check-permis-
sions checks, it verifies that none of the parent directories are group- or world-writable. If any directories are overly permissive, it is
reported. Otherwise it reports that no unsafe directories were found.
As to which .forward files are checked, it depends on the arguments included on the command line. If no argument is given, the current
user's home directory is checked for the presence of a .forward file. If any arguments are given, they are assumed to be valid logins, and
the home directory of each one is checked.
If the special argument ALL is given, the passwd entry in the /etc/nsswitch.conf file is checked, and all password entries that can be
obtained through the switch file are checked. In large domains, this can be time-consuming.
OPERANDS
The following operands are supported:
login Where login is a valid user name, checks the home directory for login.
ALL Checks the home directory of all users.
FILES
/etc/mail/sendmail.cf Defines environment for sendmail
/etc/mail/aliases Ascii mail aliases file
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWsndmu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO
getent(1M), sendmail(1M), aliases(4), attributes(5)
SunOS 5.11 10 Nov 2003 check-permissions(1M)