swapoff

 

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 SWAPON(8)           Linux Programmer's Manual           SWAPON(8)
 
 
 
NAME
        swapon,  swapoff  -  enable/disable  devices and files for
        paging and swapping
 
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.  This option
               is only available if /proc/swaps  exists  (probably
               not before kernel 2.1.25).
 
        -a     All  devices  marked  as  ``sw''  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
               -a.
 
        Swapoff disables swapping on  the  specified  devices  and
        files,  or  on  all swap entries in /etc/fstab when the -a
        flag is given.
 
 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)

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