Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64
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usr
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share
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netpbm
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//usr/share/netpbm/palmgray2.map
P2 # 4 level grayscale palette 2 2 3 0 1 2 3