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Top Forums Shell Programming and Scripting Giving "read" from standard input a timeout. Post 65228 by rello on Thursday 3rd of March 2005 04:14:05 PM
Old 03-03-2005
I am running Solaris 9. All the programs are in ksh not /bin/sh.
I am also not trying to kill the process.
I have menu and one othe optoins calls a script that loops and pauses 5 seconds before repeating.
If we enter Ctrl d or break out we go back to the prompt and not the original menu.
I want to put a prompt at the end of the loop where it pauses (sleeps) for 5 seconds and prompt the user to quit (evaluate and quit) getting me back to the original menu.
I am not sure how ans=$(line) would work.
Thanks.
 

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line(1) 						      General Commands Manual							   line(1)

NAME
line - read one line from user input SYNOPSIS
timeout] DESCRIPTION
copies one line (up to a new-line) from the standard input and writes it on the standard output. It returns an exit code of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal. Options recognizes the following command-line option: Timeout after timeout seconds where timeout is an integer value (if a non-integer value is specified, it is converted to an integer; i.e., rounded down). A blank is required between and the timeout argument. This option is not documented in POSIX and other industry standards, and should not be used in portable applications. EXTERNAL INFLUENCES
International Code Set Support Single- and multi-byte character code sets are supported. EXAMPLES
The following lines in a shell script prompt for a file name and display information about the file: To limit the response time to 10 seconds, use the form: then test for no response. If no response occurs before timeout expires, a default behavior should be provided. WARNINGS
This command is likely to be withdrawn from X/Open standards. Applications using this command might not be portable to other vendors' sys- tems. As an alternative is recommended. SEE ALSO
sh(1), read(2). STANDARDS CONFORMANCE
line(1)
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