Linux swapoff command

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The Linux swapoff command is used to disable the system swap area (swap area).

swapoff is actually a symbolic link to swapon, which can be used to disable the system's swap area.

Syntax

swapoff [device]

Parameters:

• -a Set/etc/All devices set to swap in fstab file are disabled
• -h Help Information
• -V Version Information

Online Examples

Display Partition Information:

# sfdisk -l //Display Partition Information
Disk /dev/sda: 1305 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
  Device Boot Start   End  #cyls  #blocks  Id System
/dev/sda1  *   0+   12   13-  104391  83 Linux
/dev/sda2     13  1304  1292  10377990  8e Linux LVM
/dev/sda3     0    -    0     0  0 Empty
/dev/sda4     0    -    0     0  0 Empty
Disk /dev/sdb: 652 cylinders, 255 heads, 63 sectors/track
sfdisk: ERROR: sector 0 does not have an msdos signature
/dev/sdb: unrecognized partition
No partitions found

Disable Swap Partition.

# swapoff /dev/sda2 // Disable Swap Partition

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