backup_interactive - Enters interactive mode
>] [ -h
The backup interactive
initiates an interactive session for issuing
commands. As indicated in the syntax statement, the operation
code ( interactive
) is optional.
Several features of interactive mode distinguish it from regular mode:
- In interactive mode, the "backup"> prompt
replaces the system (shell) prompt. The operator enters only a command's
operation code (omitting the command suite name, backup).
- If the -localauth flag or the -cell argument
is included on the backup interactive command, the settings apply
to all commands issued during that interactive session. The issuer does
not need to type them on every command. Another consequence is that the
flag and argument do not appear in the syntax statement generated by the
help subcommand or -help flag on an individual command
issued at the "backup"> prompt.
- The backup jobs and backup kill commands are
available only in interactive mode. It is not possible to track and
terminate backup operations as cleanly in non-interactive mode.
- It is not necessary to enclose strings that include
metacharacters in double quotes or other delimiters.
- The backup command interpreter establishes a connection to
the Backup Server, Volume Server and Volume Location (VL) Server processes
as it enters interactive mode, and uses the same connection for all
commands during the session. Execution time can therefore be faster than
in non-interactive mode, in which the command interpreter must establish a
new connection for each command.
To exit an interactive session, issue the backup quit
- Constructs a server ticket using a key from the local
/etc/openafs/server/KeyFile file. The backup command
interpreter presents it to the Backup Server, Volume Server and VL Server
during mutual authentication. Do not combine this flag with the
-cell argument. For more details, see backup(8).
- -cell <cell name>
- Names the cell in which to run the command. Do not combine
this argument with the -localauth flag. For more details, see
- Prints the online help for this command. All other valid
options are ignored.
The following example shows how the -localauth
flag and -cell
argument do not appear when the help dump
subcommand is issued in
backup> help dump
dump: start dump
Usage: dump [-volumeset <volume set name>] [-dump <dump level name>]
[-portoffset <TC port offset>] [-at <Date/time to start dump>+]
[-append ] [-n ] [-file <load file>] [-help ]
None. However, backup
commands that require privilege in regular mode
still require it in interactive mode.
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