backup_interactive - Enters interactive mode
backup [interactive] [-localauth]
[-cell <cell name>]
[-help]
backup [i] [-l]
[-c <cell name>] [-h]
The backup interactive initiates an interactive session for
issuing backup 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
command.
- -localauth
- 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
backup(8).
- -help
- 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 interactive mode.
% backup
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.
backup(8), backup_jobs(8), backup_kill(8),
backup_quit(8), butc(8)
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