line - read one line from user input
line [-t timeout]
line 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.
line recognizes the following command-line option:
-t timeout 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 -t and the timeout
argument. This option is not documented in POSIX and
other industry standards, and should not be used in
International Code Set Support
Single- and multi-byte character code sets are supported.
The following lines in a shell script prompt for a file name and
display information about the file:
echo 'Enter file name: \c'
ls -l $reply
To limit the response time to 10 seconds, use the form:
reply=`line -t 10`
then test for no response. If no response occurs before timeout
expires, a default behavior should be provided.
This command is likely to be withdrawn from X/Open standards.
Applications using this command might not be portable to other
vendors' systems. As an alternative read is recommended.
Hewlett-Packard Company - 1 - HP-UX Release 11i: November 2000
line: SVID2, SVID3, XPG2, XPG3
Hewlett-Packard Company - 2 - HP-UX Release 11i: November 2000