cbackup(ADM)                  06 January 1993                   cbackup(ADM)


 Name

    cbackup - perform unattended incremental backup

 Syntax

    /usr/lib/sysadmin/cbackup level len device filesystem

 Description

    cbackup allows unattended incremental backups to be made by calling it
    from the crontab file (see crontab(C)).  Calling cbackup directly in this
    way bypasses the sysadmsh(ADM) schedule file.

    cbackup takes four arguments:

    level       The increment level of the backup to be made.

    len         The capacity in kilobytes of the media to be used in the
                backup. Note that only one volume can be used since this is
                an unattended backup.

    device      The name of the raw device to make the backup on.

    filesystem  The filesystem to be backed up. Since cbackup uses cpio(C),
                the filesystem must be mounted when it is backed up.

 Examples

    The following entry from crontab backs up the entire root filesystem at
    2.00am every day on a 150M cartridge tape:

       * 2 * * * /usr/lib/sysadmin/cbackup 0 150000 /dev/rct0 /dev/root

    Further examples may be found in the System Administrator's Guide.

 See also

    cpio(C), cron(C), crontab(C) and fsphoto(ADM).

    System Administrator's Guide

 Notes

    The unattended backup must fit on one volume of the media being used.