Some hints on things only needed in rescue situations, i.e. easily forgotten between emergencies.
A lot of these got easier over the years, but under stress ...
Changing keyboard layout
Example for German (.de):
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loadkeyloadkeys de |
Assembling Software RAID devices
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mdadm --assemble --scan |
Accessing LVM volumes
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# find lvm vgscan # activate lvm vgchange -ay # list lvm lvs # or lvdisplay # mount something mount /dev/volumegroup/logicalvolume /mountpoint |