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-.TH recordio 1
-.SH NAME
-recordio \- record the input and output of a program
-.SH SYNTAX
-.B recordio
-.I program
-[
-.I arg ...
-]
-.SH DESCRIPTION
-.B recordio
-runs
-.I program
-with the given arguments.
-It prints lines to stderr
-showing the input and output of
-.IR program .
-
-At the beginning of each line on stderr,
-.B recordio
-inserts the
-.I program
-process ID,
-along with
-.B <
-for input or
-.B >
-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.
-
-.B recordio
-prints every packet of input and output immediately.
-It does not attempt to combine packets into coherent stderr lines.
-For example,
-
-.EX
- recordio sh -c 'cat /dev/fd/8 2>&1' > /dev/null
-.EE
-
-could produce
-
-.EX
- 5135 > cat: /dev/fd/8: Bad file descriptor
-.br
- 5135 > [EOF]
-.EE
-
-or
-
-.EX
- 5135 > cat: +
-.br
- 5135 > /dev/fd/8+
-.br
- 5135 > : +
-.br
- 5135 > Bad file descriptor
-.br
- 5135 > [EOF]
-.EE
-
-.B recordio
-uses several lines for long packets
-to guarantee that each line is printed atomically to stderr.
-
-.B recordio
-runs as a child of
-.IR program .
-It exits when it sees the end of
-.IR program 's
-output.
-.SH "SEE ALSO"
-tcpserver(1)