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#1
July 6th, 2004, 11:14 PM
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Validating integer input
Hi,
Can anyone tell me how can I validate an input as Integer not character or anything else??? Is there any way to read the input without the user hitting the <Enter> key?? I really appreciate your help. Thanx 
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#2
July 7th, 2004, 03:55 AM
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This will do
Code:
#!/bin/sh
getkey 2>/dev/null 1>/dev/null
KEY=`echo $?`
case $KEY in
48)
echo "0";;
49)
echo "1";;
50)
echo "2";;
51)
echo "3";;
52)
echo "4";;
53)
echo "5";;
54)
echo "6";;
55)
echo "7";;
56)
echo "8";;
57)
echo "9";;
esac
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#3
July 7th, 2004, 09:28 AM
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What is getkey? It's definitely not part of the Bourne shell.
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#4
July 8th, 2004, 07:57 PM
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I tried your code but doesn't seem to work though. The KEY variable is always set to 0. I put a sleep so it can wait for the user to input. Don't know whether thats the problem. Can you please help me mate.
#!/bin/sh while [ true ]; do sleep 2 getkey 2>/dev/null 1>/dev/null KEY=`echo $?` echo $? case $KEY in 48) echo "0";; 49) echo "1";; 50) echo "2";; 51) echo "3";; 52) echo "4";; 53) echo "5";; 54) echo "6";; 55) echo "7";; 56) echo "8";; 57) echo "9";; esac done Thanx..
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#5
July 8th, 2004, 10:57 PM
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Sorry I missed a function there.
Code:
function getkey()
{
read -rsn 1 REPLY;
return $REPLY;
}
Also change the numbers from 48 - 57
as
0-9
Coded it in C mood :-)
Last edited by murugesan : July 8th, 2004 at 11:15 PM.
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