SNAP(1) General Commands Manual SNAP(1)
snap - SunView application for system and network administration
Available only on Sun 386i systems running a SunOS 4.0.x release or
earlier. Not a SunOS 4.1 release feature.
snap simplifies the execution of a variety of system administration
tasks in the user-friendly environment of a SunView window. snap eases
the following tasks: personal or centralized backup and restoration of
files, management of users accounts and user groups, software installa-
tion, network administration, and management of devices such as print-
ers, terminals, modems, and the peripheral box containing disk and tape
Anyone can use snap, but the operations allowed depend on the secondary
group membership of the user at the time that snap is invoked. There
are four secondary user groups specifically recognized by snap, member-
ship in which bestows various powers over the corresponding area of
system administration. These are:
accounts users and user groups.
devices printers, terminals, modems, and peripheral box.
operator centralized backup and restoration of files, and installation
networks domains and systems, including the New User Accounts feature
and Automatic System Installation features.
A user's snap privileges depend upon which of these four groups he or
she belongs to. If they get an account through New User Accounts, or
if an administrator adds them using the defaults, new users become mem-
bers of the primary group users, and are given all snap privileges.
This can be changed by changing the secondary group membership of the
primary group users with snap. Note: this does not change the group
membership of existing users, but only of new users. The secondary
group membership of existing users must be changed individually.
An administrator using snap can create new user accounts and remove
existing ones, change a user's snap privileges, and control users'
access to their accounts. New users can create their own accounts as
they first login if the New User Accounts feature is activated as
described under Networks below.
Epson and Epson-like printers (most printers using the Centronics par-
allel interface), text serial printers, and HP Laserjet and compatible
printers can be administered with snap . The supported terminal types
are vt-100 and wyse. The supported modem types are Hayes Smartmodem or
a modem that is compatible with Hayes Smartmodem. For all other types
of terminals, modems, or printers, the software must be configured man-
ually. See for details.
snap can add or remove, display and change information about, or dis-
able or enable either a printer, a terminal, a modem, or the peripheral
box containing disk and tape drives. Devices not added using snap can
not be manipulated with snap.
Regardless of the primary or secondary group membership of users, they
can backup and restore their own files with snap.
Backup and removal of all files can be done by members of the operator
Much of the network setup must be done when the first machine in the
network, the master server, is started up, and when each client is con-
nected and booted for the first time. Some of this information can
never be changed.
Once the master and slave servers are installed, snap can be used to
add and assign diskless clients to servers, remove them, modify their
network roles, and perform all the functions listed above under
Accounts, Devices, and Operator on any system in the network.
If desired, you can also enable or disable the feature that allows a
user to create his own account while logging in (New User Accounts),
and the automatic system installation feature, two possible security
Sun386i System and Network Administration
19 February 1988 SNAP(1)