Mission Control

"Stop reading man pages without inspecting live state. If you cannot drop into an emergency..."

"A filesystem is full when bytes OR inodes run out. Always verify /etc/fstab with 'mount -a..."

"Purge 'ifconfig' and 'netstat' from muscle memory. Master 'ip' and 'ss'. If DNS fails, tes..."

"Permissions are system invariants. SSH silently discards keys if ~/.ssh permissions are pe..."