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mattsta/vmstat.sh

Created December 23, 2021 20:45
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  1. mattsta created this gist Dec 23, 2021.
    9 changes: 9 additions & 0 deletions vmstat.sh
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    Original file line number Diff line number Diff line change
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    #!/usr/bin/env bash

    # mac vm_stat output is unreadable by default (it reports values as multiple of 16384 byte pages),
    # so convert the results to actual GB used automatically.

    # this python one liner is a list comprehension because it has to hack around
    # python not allowing single-line for loops directly.

    vm_stat | python -c 'import sys; [print(f"{l:<35}{int(sz) * 16384 / 2**30:>15,.2f} GB") for idx, (l, sz) in enumerate(x.strip().strip(".").split(":") for x in sys.stdin) if idx > 0]'