This has got me stumped and no solution on the WWW or here either that I can see.
I suspect this can't be done... ;o(
My requirement is to hold a _random_ key down and run a single command.
Easy EXCEPT the keyboard keeps adding that same keystroke into a type ahead buffer somewhere and does NOT wait until the command has finished.
In this real example sleep is the command but almost any command does the same.
You will notice I have tried various ideas but all give the same results...
Take this real example, hold the s key down for 1 to 2 seconds and watch the results:-
Is it possible to just get one, and one only, ketstroke with the key depressed until the next loop just like INKEY$ in BASIC where each statement is executed sequentially?
View these incorrect results:-
You will notice that sleep does its job of delaying the printout but it is printing a string of "s's" instead of one just "s" then waiting before accessing the next single character.
I hope this is lucid enough.
TIA.
Bazza...
I suspect this can't be done... ;o(
My requirement is to hold a _random_ key down and run a single command.
Easy EXCEPT the keyboard keeps adding that same keystroke into a type ahead buffer somewhere and does NOT wait until the command has finished.
In this real example sleep is the command but almost any command does the same.
You will notice I have tried various ideas but all give the same results...
Take this real example, hold the s key down for 1 to 2 seconds and watch the results:-
Code:
#!/bin/bash
# exec 3<&0
while true
do
KEY="?"
stty -echo -icanon min 0 time 0
KEY=$(dd bs=1 count=1 2> /dev/null)
# Change -u[x] to the correct file descriptor.
# read -s -n1 -u0 KEY
KEY="${KEY:0:1}"
if [ "$KEY" = "s" ]
then
sleep 0.5
# wait
printf "$KEY "
fi
if [ "$KEY" = "q" ]
then
break
fi
done
stty sane
# exec 0<&3 3<&-
echo ""View these incorrect results:-
Code:
Last login: Mon Jun 8 18:44:11 on ttys000
AMIGA:barrywalker~> cd ~/Desktop/Code/Shell
AMIGA:barrywalker~/Desktop/Code/Shell> ./kb
s s s s s s s s s s s s s
AMIGA:barrywalker~/Desktop/Code/Shell> _I hope this is lucid enough.
TIA.
Bazza...