"Eating way more food than necessary at a meal, with the intent of stocking up so not to have to eat again for a long time." (from Urban Dictionary).
-n, --number
number all output lines
-b, --number-nonblank
number nonempty output lines
-s, --squeeze-blank
suppress repeated empty output lines
set -o noclobber set +o noclobber (>|)
allow and prevent redirection of cat accidentally overwriting existing files
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