dotfiles/zsh/.oh-my-zsh/plugins/genpass/genpass-monkey
2024-06-19 00:06:56 +02:00

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