unix 下的C开发手册,还用详细的例程。

																				line																The Single UNIX ® Specification, Version 2				Copyright © 1997 The Open Group												 NAME				line - read one line (LEGACY)				 SYNOPSIS												line 												 DESCRIPTION				The				line				utility copies one line (up to and including a newline) from the				standard input and writes it to standard output.				It always writes at least a newline.				 OPTIONS				None.				 OPERANDS				None.				 STDIN				The standard input is a text file.				 INPUT FILES				None.				 ENVIRONMENT VARIABLES				None.				 ASYNCHRONOUS EVENTS				Default.				 STDOUT				The standard output is a text file consisting of one line.				 STDERR				Used only for diagnostic messages.				 OUTPUT FILES				None.				 EXTENDED DESCRIPTION				None.				 EXIT STATUS				Exit status is:												0Successful completion.								>0End-of-file on input.												 CONSEQUENCES OF ERRORS				Default.				 APPLICATION USAGE				The				line				utility is often used within command scripts to				read from the user's terminal.								Applications should migrate to the				read				utility.				 EXAMPLES				None.				 FUTURE DIRECTIONS				None.				 SEE ALSO				read.												UNIX ® is a registered Trademark of The Open Group.				Copyright © 1997 The Open Group				 [ Main Index | XSH | XCU | XBD | XCURSES | XNS ]