mkswap

Sets up a Linux swap area on a device or in a file.

• Setup a given partition as swap area:

sudo mkswap {/dev/sdb7}

• Use a given file as swap area:

sudo mkswap {path/to/file}

• Check a partition for bad blocks before creating the swap area:

sudo mkswap -c {/dev/sdb7}

• Specify a label for the file (to allow `swapon` to use the label):

sudo mkswap -L {swap1} {path/to/file}

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