Controlling user input Post: 303038268

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line

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       This command is likely to be withdrawn from X/Open standards.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)

10 More Discussions You Might Find Interesting

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