recordio(1)recordio(1)NAMErecordio - record the input and output of a program
SYNTAXrecordio program [ arg ... ]
DESCRIPTIONrecordio 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 exam‐
ple,
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 ALSOtcpserver(1)recordio(1)
