./_Man_SunOS_4.1.3_html/html1/snap.1.html

Manual page for SNAP(1)

snap - SunView application for system and network administration

SYNOPSIS

snap

AVAILABILITY

Available only on Sun 386i systems running a SunOS 4.0.x release or earlier. Not a SunOS 4.1 release feature.

DESCRIPTION

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 installation, network administration, and management of devices such as printers, terminals, modems, and the peripheral box containing disk and tape drives.

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, membership 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 of software.
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 members 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.

Accounts

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.

Devices

Epson and Epson-like printers (most printers using the Centronics parallel 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 manually. See [a manual with the abbreviation ADMIN] for details.

snap can add or remove, display and change information about, or disable 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.

Operator

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 group.

Networks

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 connected 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 loopholes.