Commands-Memory

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Swaps:

swapon -s

or

cat /proc/swaps

[See swap info in system]

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lsblk -o TYPE,NAME,KNAME,UUID,MOUNTPOINT,SIZE

[To see all partitions (including swap memory partition)]

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free -h

[To see used and free swap memory]

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swapoff -a && swapon -a

[To free swap memory]

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sar -r

[Great tool as part of sysstat to show history of memory usage]

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