=head1 OPERATIONS
-If the I<--enable> option is I<not> given, then all sysprep operations
-in the list below are enabled, although some are skipped depending on
-the type of guest.
+If the I<--enable> option is I<not> given, then
+I<all sysprep operations are enabled>, although some are skipped
+depending on the type of guest.
Operations can be individually enabled using the I<--enable> option.
Use a comma-separated list, for example:
To list the operations supported by the current version of
virt-sysprep, use I<--list-operations>.
+Future versions of virt-sysprep may add more operations. If you are
+using virt-sysprep and want predictable behaviour, specify only the
+operations that you want to have enabled.
+
+=head2 cron-spool
+
+Remove user at-jobs and cron-jobs.
+
=head2 dhcp-client-state
Remove DHCP client leases.
Remove many log files.
+=head2 mail-spool
+
+Remove email from the local mail spool directory.
+
=head2 net-hwaddr
Remove HWADDR (hard-coded MAC address) configuration. For Fedora and
See C</RANDOM SEED> below.
+=head2 rhn-systemid
+
+Remove the RHN system ID.
+
=head2 smolt-uuid
Remove the Smolt hardware UUID.
MAC address is assigned to a new name (eg. eth1) and this is usually
undesirable. Erasing the udev persistent net rules avoids this.
+=head2 utmp
+
+Remove the utmp file.
+
+This records who is currently logged in on a machine. In modern Linux
+distros it is stored in a ramdisk and hence not part of the virtual
+machine's disk, but it was stored on disk in older distros.
+
=head2 yum-uuid
Remove the yum UUID.
-yum creates a fresh UUID the next time it runs when it notices that
+Yum creates a fresh UUID the next time it runs when it notices that
the original UUID has been erased.
=head1 COPYING AND CLONING
=head1 SECURITY
-Although virt-sysprep removes some sensitive information from
-the guest, it does not pretend to remove all of it. You should
-examine the L</OPERATIONS> above, and the implementation of
-the operations in the shell script.
-
-You should also examine the guest afterwards.
+Although virt-sysprep removes some sensitive information from the
+guest, it does not pretend to remove all of it. You should examine
+the L</OPERATIONS> above, and the implementation of the operations in
+the shell script. You should also examine the guest afterwards.
Sensitive files are simply removed. The data they contained may still
exist on the disk, easily recovered with a hex editor or undelete