backup(1) UNIX System V(Application Compatibility Package) backup(1)
NAME
backup - perform backup functions
SYNOPSIS
backup [-t] [-p | -c | -f <files> | -u "<user1> [user2]"] -d <device>
backup -h
DESCRIPTION
-h produces a history of backups. Tells the user when the last
complete and incremental/partial backups were done.
-c complete backup. All files changed since the system was installed
are backed up. If an incremental/partial backup was done, all
files modified since that time are backed up, otherwise all files
modified since the last complete backup are backed up. A complete
backup must be done before a partial backup.
-f backup files specified by the files argument. file names may
contain characters to be expanded (that is, *, .) by the shell.
The argument must be in quotes.
-u backup a user's home directory. All files in the user's home
directory will be backed up. At least one user must be specified
but it can be more. The argument must be in quotes if more than
one user is specified. If the user name is "all", then all the
user's home directories will be backed up.
-d used to specify the device to be used. It defaults to
/dev/SA/diskette.
-t used when the device is a tape. This option must be used with the
-d option when the tape device is specified.
A complete backup must be done before a partial backup can be done. Raw
devices rather than block devices should always be used. The program can
handle multi-volume backups. The program will prompt the user when it is
ready for the next medium. The program will give you an estimated number
of floppies/tapes that will be needed to do the backup. Floppies must be
formatted before the backup is done. Tapes do not need to be formatted.
If backup is done to tape, the tape must be rewound.
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