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#!/bin/bash
trap 'stty $ttysave' EXIT INT TERM
ttysave=$(stty -g)
stty raw -echo
while true
do
read -n1 char
echo "$char"
done |
awk '
/q/ {exit}
{printf "[%s]", $0; fflush}
'
exit
awk 'BEGIN {
cmd = "dd bs=1 count=1 2>/dev/null"
for (;;) {
cmd | getline ch
close(cmd)
if (ch == "q") exit
printf("[%s]", ch)
}
}'
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