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           automount [options] [master_map]


           The  automount  program  is used to manage mount points for autofs, the
           inlined  Linux   automounter.    automount   works   by   reading   the
           auto.master(5)  map and sets up mount points for each entry in the mas-
           ter map allowing them to be automatically mounted  when  accessed.  The
           file systems are then automatically umounted after a period of inactiv-


           -h, --help
                  Print brief help on program usage.
           -p, --pid-file
                  Write the pid of the daemon to the specified file.
           -t, --timeout
                  Set the global minimum timeout, in  seconds,  until  directories
                  are unmounted. The default is 10 minutes. Setting the timeout to
                  zero disables umounts completely.
           -n <seconds>, --negative-timeout <seconds>
                  Set the default timeout for caching failed key lookups. The  de-
                  fault is 60 seconds.
           -v, --verbose
                  Enables  logging of general status and progress messages for all
                  autofs managed mounts.
           -d, --debug
                  Enables logging of general status and progress messages as  well
                  as debuging messages for all autofs managed mounts.
                  Define  a global macro substitution variable. Global definitions
                  are over-ridden macro definitions of the same name specified  in
                  mount entries.
           -f, --foreground
                  Run  the  daemon  in  the forground and log to stderr instead of
           -r, --random-multimount-selection
                  Enables the use of ramdom selection when choosing a host from  a
                  list of replicated servers.
           -m, --dumpmaps
                  Dump configured automounter maps, then exit.
           -O, --global-options
                  sic  logging. Note that enabling debug or verbose logging in the
                  autofs global configuration  will  override  dynamic  log  level
                  changes.  For example, if verbose logging is set in the configu-
                  ration then attempting to set logging to basic logging, by using
                  alert, crit, err or emerg won't stop the verbose logging. Howev-
                  er, setting logging to debug will lead to everything (debug log-
                  ging)  being  logged  witch can then also be disabled, returning
                  the daemon to verbose logging. This option can be  specified  to
                  change the logging priority of an already running automount pro-
           The path argument corresponds to the automounted path name as specified
           in the master map.
           -C, --dont-check-daemon
                  Don't check if the daemon is currently running (see NOTES).
           -F, --force
                  Force  an  unlink umount of existing mounts under autofs managed
                  mount points during startup. This can cause  problems  for  pro-
                  cesses with working directories within these mounts (see NOTES).


           automount takes one optional argument, the name of the  master  map  to
                  Location for autofs master map that defines autofs managed mount
                  points and  the  mount  maps  they  will  use.  The  default  is


           If  the automount daemon catches a USR1 signal, it will umount all cur-
           rently unused autofs managed mounted file systems and continue  running
           (forced  expire).  If it catches the TERM signal it will umount all un-
           used autofs managed mounted file systems and exit if there are  no  re-
           maining  busy file systems. If autofs has been compiled with the option
           to ignore busy mounts on exit it will exit leaving any busy  mounts  in
           place  otherwise busy file systems will not be umounted and autofs will
           not exit.  Alternatively, if autofs has been compiled with  the  option
           to  enable  forced shutdown then a USR2 signal to the daemon will cause
           all mounts to be umounted and any busy mounts to be forcibly  umounted,
           including autofs mount point directories (summary execution). Note that
           the forced umount is an unlink operation and the actual umount will not
           happen  in the kernel until active file handles are released.  The dae-
           mon also responds to a HUP signal which triggers an update of the  maps
           for each mount point.
           If  any autofs mount point directories are busy when the daemon is sent
           an exit signal the daemon will not exit. The exception to  this  is  if
           autofs  has  been  built  with  configure options to either ignore busy
           mounts at exit or force umount at exit. If the ignore  busy  mounts  at
           is supported.
           If the option to force an unlink of mounts at startup is used then pro-
           cesses whose working directory is within unlinked automounted  directo-
           ries will not get the correct pwd from the system. This is because, af-
           ter the mount is unlinked from the mount tree, anything that  needs  to
           walk  back up the mount tree to construct a path, such as getcwd(2) and
           the proc filesystem /proc/<pid>/cwd, cannot work because the point from
           which the path is constructed has been detached from the mount tree.


           autofs(5),      autofs(8),      auto.master(5),     mount(8).      aut-


           Don't know, I've fixed everything I know about.
           The documentation could be better.
           Please report other bugs along with a  detailed  description  to  <aut-
 >. For instructions on how to join the list and for
           archives visit


           H. Peter Anvin <> and Ian Kent <>.
                                      12 Apr 2006                     AUTOMOUNT(8)

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