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33 lines
755 B
Text
33 lines
755 B
Text
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#!/usr/bin/env zsh
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#
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# Usage: genpass-monkey [NUM]
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#
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# Generate a password made of 26 alphanumeric characters
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# with the security margin of at least 128 bits.
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#
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# Example password: nz5ej2kypkvcw0rn5cvhs6qxtm
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#
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# If given a numerical argument, generate that many passwords.
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emulate -L zsh -o no_unset -o warn_create_global -o warn_nested_var
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if [[ ARGC -gt 1 || ${1-1} != ${~:-<1-$((16#7FFFFFFF))>} ]]; then
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print -ru2 -- "usage: $0 [NUM]"
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return 1
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fi
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zmodload zsh/system || return
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{
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local -r chars=abcdefghjkmnpqrstvwxyz0123456789
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local c
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repeat ${1-1}; do
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repeat 26; do
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sysread -s1 c || return
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# There is uniform because $#chars divides 256.
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print -rn -- $chars[#c%$#chars+1]
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done
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print
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done
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} </dev/urandom
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