SWAPON (8)
enable/disable devices and files for paging and swapping
SYNOPSIS
/sbin/swapon [-h -V]
/sbin/swapon -a [-v]
/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
-V
-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.
-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.
SEE ALSO
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.
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