some of these suggestions were sources from here

shuf -n 1 $FILE
head -$((${RANDOM} % `wc -l < file` + 1)) file | tail -1
cat $FILE | sort --random-sort | head -n 1

perl -e 'srand; rand($.) < 1 && ($line = $_) while <>; print $line;' filename

psuedo random integer bash


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