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linux

grub-install: error: failed to register the EFI boot entry: Operation not permitted.

by tini 31/08/2020
  1. umount /boot/efi
  2. apt install -f
  3. mount -a
  4. apt update && sudo apt upgrade

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cisco, networking

Firepower FTD 11X0,21X0 management address change

by tini 20/08/2020

configure network ipv4 manual <ip address> <subnet mask> <df gateway> management0
show network

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