TLDR
Enter a command. For example: ldconfig, wol, brightnessctl.

mdadm

 
RAID management utility. More information: https://manned.org/mdadm.
 
  • Create array:
     
    mdadm --create {{/dev/md/MyRAID}} --level {{raid_level}} --raid-devices {{number_of_disks}} {{/dev/sdXN}}
     
  • Stop array:
     
    mdadm --stop {{/dev/md0}}
     
  • Mark disk as failed:
     
    mdadm --fail {{/dev/md0}} {{/dev/sdXN}}
     
  • Remove disk:
     
    mdadm --remove {{/dev/md0}} {{/dev/sdXN}}
     
  • Add disk to array:
     
    mdadm --assemble {{/dev/md0}} {{/dev/sdXN}}
     
  • Show RAID info:
     
    mdadm --detail {{/dev/md0}}
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