swapoff:tldr:1fa7a
The command "swapoff ${-dev-sdb7}" is attempting to disable (or turn off) the swap space on a specific partition, in this case, a partition identified as /dev/sdb7.
Here is a breakdown of the command:
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"swapoff": This is a command used in Linux systems to deactivate swap space. Swap space is a portion of a hard disk that is used to temporarily store data that does not fit into the computer's RAM (random access memory).
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"${-dev-sdb7}": This part refers to the specific partition that needs the swap space to be disabled. It is represented as "/dev/sdb7". In Linux, partitions are typically identified by their device name, where "/dev/sdb7" indicates the seventh partition on the second storage device (sdb).
So, when running the command "swapoff ${-dev-sdb7}", the system will attempt to deactivate the swap space on the partition identified as "/dev/sdb7".