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)