wdmd(8) [debian man page]

WDMD(8) 						      System Manager's Manual							   WDMD(8)

NAME

       wdmd - watchdog multiplexing daemon

SYNOPSIS

       wdmd [OPTIONS]

DESCRIPTION

       This  daemon opens /dev/watchdog and allows multiple independent sources to detmermine whether each KEEPALIVE is done.  Every test interval
       (10 seconds), the daemon tests each source.  If any test fails, the KEEPALIVE is not done.  In a standard configuration, the watchdog timer
       will  reset the system if no KEEPALIVE is done for 60 seconds ("fire timeout").	This means that if single test fails 5-6 times in row, the
       watchdog will fire and reset the system.  With multiple test sources, fewer separate failures back to back can also cause a reset, e.g.

       T seconds, P pass, F fail
       T00: test1 P, test2 P, test3 P: KEEPALIVE done
       T10: test1 F, test2 F, test3 P: KEEPALIVE skipped
       T20: test1 F, test2 P, test3 P: KEEPALIVE skipped
       T30: test1 P, test2 F, test3 P: KEEPALIVE skipped
       T40: test1 P, test2 P, test3 F: KEEPALIVE skipped
       T50: test1 F, test2 F, test3 P: KEEPALIVE skipped
       T60: test1 P, test2 F, test3 P: KEEPALIVE skipped
       T60: watchdog fires, system resets

       (Depending on timings, the system may be reset sometime shortly before T60, and the tests at T60 would not be run.)

       A crucial aspect to the design and function of wdmd is that if any single source does not pass tests for the fire timeout, the watchdog	is
       guaranteed  to fire, regardless of whether other sources on the system have passed or failed.  A spurious reset due to the combined effects
       of multiple failing tests as shown above, is an accepted side effect.

       wdmd will exit if a watchdog driver is not loaded.

       wdmd cannot be used on the system with any other program that needs to open /dev/watchdog, e.g. watchdog(8).

   Test Source: clients
       Using libwdmd, programs connect to wdmd via a unix socket, and send regular messages to wdmd to update an expiry time for their connection.
       Every test interval, wdmd will check if the expiry time for a connection has been reached.  If so, the test for that client fails.

       (Other test sources such as scripts executed each test interval may be added in the future.)

OPTIONS

       -D     Enable debugging to stderr and don't fork.

       -H num Enable (1) or disable (0) high priority features such as realtime scheduling priority and mlockall.
	      Default 1.

								    2011-08-01								   WDMD(8)

bup-restore(1)						      General Commands Manual						    bup-restore(1)

NAME

       bup-restore - extract files from a backup set

SYNOPSIS

       bup restore [--outdir=outdir] [-v] [-q]

DESCRIPTION

       bup restore extracts files from a backup set (created with bup-save(1)) to the local filesystem.

       The specified paths are of the form /branch/revision/path/to/file.  The components of the path are as follows:

       branch the name of the backup set to restore from; this corresponds to the --name (-n) option to bup save.

       revision
	      the  revision of the backup set to restore.  The revision latest is always the most recent backup on the given branch.  You can dis-
	      cover other revisions using bup ls /branch.

       /path/to/file
	      the original absolute filesystem path to the file you want to restore.  For example, /etc/passwd.

       Note: if the /path/to/file is a directory, bup restore will restore that directory as well as recursively restoring all its contents.

       If /path/to/file is a directory ending in a slash (ie.  /path/to/dir/), bup restore will restore the children of that directory directly to
       the  current directory (or the --outdir).  If the directory does not end in a slash, the children will be restored to a subdirectory of the
       current directory.  See the EXAMPLES section to see how this works.

OPTIONS

       -C, --outdir=outdir
	      create and change to directory outdir before extracting the files.

       -v, --verbose
	      increase log output.  Given once, prints every directory as it is restored; given twice, prints every file and directory.

       -q, --quiet
	      don't show the progress meter.  Normally, is stderr is a tty, a progress display is printed that shows the  total  number  of  files
	      restored.

EXAMPLE

       Create a simple test backup set:

	      $ bup index -u /etc
	      $ bup save -n mybackup /etc/passwd /etc/profile

       Restore just one file:

	      $ bup restore /mybackup/latest/etc/passwd
	      Restoring: 1, done.

	      $ ls -l passwd
	      -rw-r--r-- 1 apenwarr apenwarr 1478 2010-09-08 03:06 passwd

       Restore the whole directory (no trailing slash):

	      $ bup restore -C test1 /mybackup/latest/etc
	      Restoring: 3, done.

	      $ find test1
	      test1
	      test1/etc
	      test1/etc/passwd
	      test1/etc/profile

       Restore the whole directory (trailing slash):

	      $ bup restore -C test2 /mybackup/latest/etc/
	      Restoring: 2, done.

	      $ find test2
	      test2
	      test2/passwd
	      test2/profile

SEE ALSO

       bup-save(1), bup-ftp(1), bup-fuse(1), bup-web(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															    bup-restore(1)