linux man page for recordio

recordio(1)						      General Commands Manual						       recordio(1)

NAME

       recordio - record the input and output of a program

SYNTAX

       recordio program [ arg ...  ]

DESCRIPTION

       recordio runs program with the given arguments.	It prints lines to stderr showing the input and output of program.

       At  the	beginning  of each line on stderr, recordio inserts the program process ID, along with < for input or > for output.  At the end of
       each line it inserts a space, a plus sign, or [EOF]; a space indicates that there was a newline in the input or output, and [EOF] indicates
       the end of input or output.

       recordio  prints  every	packet	of  input and output immediately.  It does not attempt to combine packets into coherent stderr lines.  For
       example,

	    recordio sh -c 'cat /dev/fd/8 2>&1' > /dev/null

       could produce

	    5135 > cat: /dev/fd/8: Bad file descriptor
	    5135 > [EOF]

       or

	    5135 > cat: +
	    5135 > /dev/fd/8+
	    5135 > : +
	    5135 > Bad file descriptor
	    5135 > [EOF]

       recordio uses several lines for long packets to guarantee that each line is printed atomically to stderr.

       recordio runs as a child of program.  It exits when it sees the end of program's output.

SEE ALSO

       tcpserver(1)

																       recordio(1)