Installation guide

The vdump/vrestore Utilities and UFS File Systems
If a UFS file system that contains quota files or other sparse files is backed
up using the vdump utility and restored using the vrestore utility, the
quota files or other sparse files will be restored as follows:
• The first page of a file on disk will be restored as a fully populated
page; that is, empty nonallocated disk blocks will be zero filled.
• Any additional pages on disk will be restored sparse.
The dxarchiver Utility
The dxarchiver utility does not support extended UIDs and GIDs.
However, the pax and tar utilities do support extended UIDs and GIDs
and can be used as alternatives. If you need to use the dxarchiver utility,
you must not enable extended UID or GID support.
The cpio Utility
The cpio utility does not support extended UIDs and GIDs. However, the
pax and tar utilities do support extended UID and GIDs and can be used
as alternatives. If you need to use the cpio utility, you must not enable
extended UID or GID support.
The pax Utility
The pax utility, used to extract, list, or write archive files has been modified
to support long file names and extended UID/GID values. To take advantage
of these enhancements, specify the xtar format with the -x option.
The tar Utility
The tar utility, used to extract, list, or write archive files has been modified
to support long file names and extended UID/GID values. To take advantage
of these enhancements, specify the -E option when using the tar utility.
PATHWORKS
PATHWORKS does not support extended UIDs and GIDs. If you use
PATHWORKS and need extended UID or GID support, you should upgrade
to ASDU (Advancer Server for Tru64 UNIX) Version 4.0 or higher.
9.2 Adding a User Account
You can add a user to the system in three ways:
• Add a user account with the adduser command utility. This utility
supersedes the useradd interactive script and is a command-line
9–8 Administering User Accounts and Groups