Nov 062021
 

Someone asked me about this – a zsh function which I use to generate random passwords :-

✓ mike@pica» rpass noise
oOg6vsM+V0It4he6US4Xk6DuZPja9okyOpQyUCfW6NQ=
✓ mike@pica» rpass words
patternmaker+meio+tubicolous+misbelievingly

It’s too small and simple for me to classify as “open source” but there’s no harm in sharing the function :-

✓ mike@pica» which rpass
rpass () {
	case "$1" in
		("noise") dd if=/dev/random bs=1 count=32 status=none | base64 -i ;;
		("words") punct=("," "." "<" ">" "/" ";" ":" "-" "+" "=") 
			onep=${punct[$(($RANDOM % ${#punct[@]} + 1 ))]} 
			w1=$(shuf -n 1 /usr/share/dict/words | sed -e "s/'.*$//") 
			w2=$(shuf -n 1 /usr/share/dict/words | sed -e "s/'.*$//") 
			w3=$(shuf -n 1 /usr/share/dict/words | sed -e "s/'.*$//") 
			w4=$(shuf -n 1 /usr/share/dict/words | sed -e "s/'.*$//") 
			echo "${w1}${onep}${w2}${onep}${w3}${onep}${w4}" ;;
		("*") echo $1 not understood ;;
	esac
}

This is just a simple zsh function with all sorts of little “issues” – not least is that it could at least say “$1 not understood – try ‘words’ or ‘noise'”.

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