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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)

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

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=swapon&sektion=8&manpath=Red+Hat+Linux%2fi386+7.1>

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