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Linux shell scripts: user input with 'read', but with a timeout

Posted on 2004-08-07
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Last Modified: 2010-04-21
Hi,

Normally, in a shell script I get input from the user by using the command:

read yesno
if [ "$yesno" == "y" ]
then
  echo Ok.
fi

However, the distribution of Linux I am using (ARM based) doesnt support for a with the 'read' command. You just can't use -t N.

Could you explain how to read a response from the user, into a variable, with a timeout. The the program has to run on ARM based linux, so it could be source code, or a utility that I can compile for Linux.
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Question by:Risky101
3 Comments
 
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by:ahoffmann
ID: 11748759
what has -t to do with your posted example?
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by:
alikoank earned 750 total points
ID: 11751315
read is a builtin command of shell.

You can always use a different shell or download the latest version of bash for your platform.
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Author Comment

by:Risky101
ID: 11754096
> what has -t to do with your posted example?

made a typo in the question - it should say "However, the distribution of Linux I am using (ARM based) doesnt support timeouts with the 'read' command. You just can't use -t 5 to timeout in 5 seconds."
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