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       /sbin/swapon [-h -V]
       /sbin/swapon -a [-v] [-e]
       /sbin/swapon [-v] [-p priority]  specialfile ...
       /sbin/swapon [-s]
       /sbin/swapoff [-h -V]
       /sbin/swapoff -a
       /sbin/swapoff specialfile ...


       Swapon is used to specify  devices  on  which  paging  and
       swapping  are  to  take  place.   Calls to swapon normally
       occur in the system multi-user initialization file /etc/rc
       making  all swap devices available, so that the paging and
       swapping activity is interleaved  across  several  devices
       and files.

       Normally, the first form is used:

       -h     Provide help

       -V     Display version

       -s     Display swap usage summary by device. Equivalent to
              "cat  /proc/swaps".   Not  available  before  Linux

       -a     All  devices  marked  as  ``swap''  swap devices in
              /etc/fstab are made  available.  Devices  that  are
              already running as swap are silently skipped.

       -e     When  -a  is  used  with  swapon,  -e  makes swapon
              silently skip devices that do not exist.

       -p priority
              Specify priority for swapon.  This option  is  only
              available  if swapon was compiled under and is used
              under a 1.3.2 or later kernel.  priority is a value
              between  0  and  32767.  See  swapon(2)  for a full
              description of swap priorities.  Add  pri=value  to
              the  option field of /etc/fstab for use with swapon

       Swapoff disables swapping on  the  specified  devices  and
       files.  When the -a flag is given, swapping is disabled on
       all known swap devices and files (as found in  /proc/swaps
       or /etc/fstab).


       You should not use swapon on a file with holes.  Swap over
       NFS may not work.

Linux 1.x               25 September 1995               SWAPON(8)



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