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SWAPON(8)		   Linux Programmer's Manual		     SWAPON(8)

NAME
       swapon, swapoff - enable/disable	devices	and files for paging and swap-
       ping

SYNOPSIS
       /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 ...

DESCRIPTION
       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	2.1.25.

       -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 de-
	      vices 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 -a.

       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).

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

SEE ALSO
       swapon(2), swapoff(2), fstab(5),	init(8), mkswap(8), rc(8), mount(8)

FILES
       /dev/hd??  standard paging devices
       /dev/sd??  standard (SCSI) paging devices
       /etc/fstab ascii	filesystem description table

HISTORY
       The swapon command appeared in 4.0BSD.

Linux 1.x		       25 September 1995		     SWAPON(8)

NAME | SYNOPSIS | DESCRIPTION | NOTE | SEE ALSO | FILES | HISTORY

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