add do1-do7 di1 procfs

hc

2023-10-12 3124110e504ba82e43686669ed7188bcdbe72744

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# Locally computed:
sha256  4ac980a3ae24babae6f70f0a692625ece03a4a92c357fbb10d2e368386c3c26f  p910nd-0.97.tar.bz2